Open almost any revision card, lecture slide, or sociology textbook on this topic and you will find a two-way opposition: use value is what a thing is good for, exchange value is what it fetches on the market, and the tension between them is the story of capitalism. That presentation is not a simplification of Marx’s distinction. It removes the term the other two are defined against, and once it is removed the first chapter of Capital becomes unreadable, because that chapter is largely about the relation between value and its form of appearance, which is exchange value.

Three terms, not two. Use value, exchange value, and value. Exchange value is not value; it is the form in which value appears when one commodity is measured against another. A reader who treats the two as synonyms will reach the third section of the first chapter, where Marx spends thirty pages deriving how value must express itself, and find an elaborate argument about nothing, since on the two-term reading the thing being derived is already there in the definition. The confusion that stops most first readers three pages into Capital is this one, and it is almost always inherited from the summary they read beforehand rather than generated by the text.

The correction is worth the space because everything downstream depends on it. The fetishism argument depends on it. The derivation of money depends on it. The account of where profit comes from depends on it. And the single most common misreading of the labour theory of value, that Marx claimed price equals labour time, is generated directly by collapsing exchange value into value, since if the two are identical then a statement about what determines value becomes a statement about what determines price. Restoring the third term does more work than any other single move a reader of Marx can make.

The three terms defined precisely

What is the difference between use value and exchange value?

Use value is the usefulness of a thing, its capacity to satisfy some human want, which belongs to it as a physical object with particular properties. Exchange value is the proportion in which one commodity exchanges against another. They are not two aspects of the same measure; they answer different questions, and neither of them is value.

Take each in turn, with the boundaries drawn.

Use value, in Marx’s usage, is the utility of a thing considered as a property of the thing rather than as a state of mind in the person using it. This is the first place ordinary language misleads. In modern economics utility is subjective, a ranking in a person’s preferences, and quantities of it are attached to individuals rather than to objects. Marx’s use value is not that. Iron is hard, corn is nutritious, coal burns; these are properties of the objects, and they are what make the objects capable of serving human purposes. Marx says explicitly that use value is realised only in consumption or use, so the concept is not indifferent to human beings, but the bearer of the property is the object. The consequence is that Marx has no analytical use for the marginalist apparatus of diminishing marginal utility, not because he rejects it as false psychology but because his concept is doing a different job.

Use value is also, in his terminology, qualitative rather than quantitative in any comparable sense. A coat keeps you warm and a quantity of corn feeds you, and there is no common measure in which one is more or less of what the other is. This is the property that generates the whole problem the chapter addresses: if use values are incommensurable, then the fact that commodities exchange in definite proportions requires some other basis.

Exchange value is that proportion. A quantity of one commodity exchanges against a quantity of another, and the ratio is its exchange value in that other commodity. Notice immediately that exchange value is relative and plural. A coat has an exchange value in linen, another in corn, another in iron, another in money, and these are different expressions of the same thing rather than different things. Notice also that exchange value is not a property the coat possesses on its own. A coat sitting in isolation has physical properties and therefore use value; it has no exchange value until it stands in a relation to another commodity. Exchange value is a relation, and it is expressed in the body of some other commodity.

Value is what those relations express. It is the third term, and Marx introduces it as the common element that makes the equation of unlike things possible. If a quantity of corn equals a quantity of iron, something in each is being equated, and that something is not their physical properties, which are what differ, nor their usefulness, which is incommensurable. Marx identifies it as abstract human labour, measured in socially necessary labour time. Value is qualitatively uniform, since all labour considered abstractly is the same kind of thing, and quantitatively determinate, since labour time is measurable.

The relation between the three, stated as compactly as it can be: a commodity has use value by virtue of its properties, has value by virtue of being the product of socially necessary labour under conditions of production for exchange, and expresses that value in the form of exchange value when it is set against another commodity. Exchange value is the form of appearance; value is what appears.

The form-of-appearance rule

Here is the rule this article advances, and it is the sentence to memorise if only one survives.

Exchange value is what value looks like, not what value is. Every confusion in the first chapter dissolves once the reader stops treating the two as synonyms, and almost every confusion in the secondary literature can be traced to a writer who has not made the distinction.

The rule has consequences worth spelling out. Because exchange value is a form of appearance, it can be present when value is not, and value can exist without being adequately expressed. A commodity whose price is bid up by scarcity has an exchange value in excess of its value; the appearance is not tracking what it appears of. A commodity that cannot find a buyer has embodied labour that was never validated, and therefore, on the stricter reading, no value at all, though the producer counted on it having one. The gap between value and its form is not a defect in the theory; it is the space in which most of the interesting analysis happens.

The rule also explains a feature of Marx’s text that puzzles readers. He begins the chapter using exchange value loosely, in the way ordinary language uses it, and then, having derived value, tightens the usage and says that exchange value is properly the form of appearance of value. Readers who take the early loose usage as the definition and then meet the later strict usage conclude that Marx is contradicting himself. He is doing what he says he is doing in the preface: beginning with the surface appearance and working towards the relation that generates it.

Where the terms come from and whose vocabulary they are

The pairing of use value and exchange value is not Marx’s invention. It is classical vocabulary, present in Adam Smith and in David Ricardo before him, and its ancestry runs back further to the scholastic and Aristotelian distinction between the proper use of a thing and its use in exchange. Marx inherits the pair. What he adds is the third term.

This matters for two reasons, one historical and one argumentative.

Historically, it locates precisely what is original in Marx’s treatment. If you present the three terms as though all three were his, you misattribute two of them and obscure his actual contribution. If you present only the pair, as most summaries do, you present his position as identical to Smith’s on the point where it differs most.

Argumentatively, it explains the shape of the chapter. Smith had noticed that things with the greatest use value often have little exchange value and things with great exchange value often have little use, which is the paradox of value in its classical form, usually illustrated by water and diamonds. Classical economics never resolved this satisfactorily within its own framework, and the failure was one of the openings the marginalists later exploited: their answer, that value depends on the utility of the marginal unit rather than of the class of goods, dissolved the paradox at a stroke and was a large part of why the new framework won the discipline.

Marx’s response is different from both. He does not resolve the paradox by making exchange value depend on utility. He argues that the paradox arises from expecting a quantitative relation between two things that are not quantitatively comparable, and that the terms need a third member. Use value is a condition of value, since nothing useless can be a commodity at all, but it is not the source of value and not proportional to it. That is why the water and diamonds case is not a puzzle for him: water is enormously useful and, where it is freely available, requires no socially necessary labour to obtain and therefore has no value.

German terms and what English loses

Give the German once, because the English flattens a distinction the German keeps visible and because readers working with translations should know what they are looking at.

Gebrauchswert is use value, literally use-worth. Tauschwert is exchange value, exchange-worth. Wert is value. The three words share a root, so a German reader sees immediately that use value and exchange value are two compounds built on the same base term, and that the base term is a third thing standing behind them. The English renderings preserve this reasonably well, since “value” appears in all three, but the compounding is looser and the naturalness of “exchange value” as a standalone phrase in English encourages exactly the elision the German resists.

Two further points for readers working closely with the text. The German Wertform, value form, is the subject of the third section of the first chapter, and the term names the whole problem of how value expresses itself; a translation that renders it loosely obscures what that section is about. And where the English translations differ, they differ most in the first chapter, which is the worst possible place for a reader trying to establish a vocabulary. Which translation to use is a question with real consequences here, and it is addressed for the work as a whole in the guide to Marx translations and editions.

The wrong definitions that circulate

Five wrong or incomplete definitions are common enough to need naming.

The two-term reduction. This is the dominant one: use value versus exchange value, presented as an opposition, with value omitted. It appears in sociology revision materials, in introductory lecture slides, and in a good deal of cultural theory that borrows the vocabulary. The reduction is not merely incomplete; it changes what the terms mean, because on the two-term version exchange value becomes the thing determined by labour time, which is the price-equals-labour misreading in embryo. Anyone who has learned the pair without the third term has learned a position Marx spent a chapter arguing against.

Use value as subjective utility. This treats use value as how much someone wants a thing, so that a commodity’s use value varies between people and rises when desire rises. It imports the marginalist concept under Marx’s label. The giveaway is any sentence in which use value has a magnitude that changes with preferences. In Marx’s usage the bearer of use value is the object, and the concept is qualitative.

Exchange value as identical to price. Price is the money expression of value, and money is one commodity among others playing a particular role, so price is a species of exchange value rather than a synonym for it. More importantly, price diverges from value both randomly, through supply and demand, and systematically, through the formation of a general rate of profit, which the third volume develops. Treating exchange value as price collapses two distinctions at once.

Value as created by exchange. This is the mirror error of the two-term reduction, and it appears in readings that emphasise the social character of value. The claim that value is validated in exchange is correct; the claim that it is created there is not, since Marx locates the substance of value in labour performed in production. The precise formulation, which is the one that survives scrutiny, is that private labour becomes social labour through exchange, so exchange is where labour is validated as value-creating, not where the value comes from.

Value as identical to wealth. This is the error the Critique of the Gotha Programme opens by correcting. Its first pages reject the draft programme’s claim that labour is the source of all wealth, insisting that nature is a source of use values just as labour is. Wealth in the material sense is a mass of use values, and it can rise while value falls: a technical improvement that halves the labour required to produce cloth doubles the physical wealth available from a given expenditure of labour while halving the value of each unit. Anyone who has understood that a society can grow richer in use values while the value of each falls has understood the distinction well enough to use it.

Is exchange value the same as value?

No. Value is the substance, constituted by socially necessary abstract labour; exchange value is the form in which that substance appears when one commodity is measured against another. A commodity has value by virtue of its production; it has exchange value only in relation to something else.

The near neighbours and the exact difference in each case

A glossary article earns its place by drawing boundaries against the terms readers confuse with the ones being defined. Six neighbours matter here.

Price. Price is the money name of value, the exchange value of a commodity expressed in the money commodity or in whatever performs money’s functions. The relation is one of form: price is a particular exchange value, the one expressed in money. The divergence between price and value is systematic and analysed at length, so the two are never interchangeable, and the difference is the whole subject of the third volume’s treatment of prices of production.

Wealth. Wealth is a mass of use values. It is measured in physical terms and it has sources in both labour and nature. Value is measured in socially necessary labour time and has its substance in labour alone. The two move independently and can move in opposite directions, which is why productivity growth increases wealth while reducing the value of individual commodities.

Utility. Utility in modern economics is a subjective ranking held by an individual. Use value is a property of an object. They are not rival measures of the same thing, since one attaches to persons and the other to things, and a reader who substitutes one for the other will misread every passage where use value appears.

Surplus value. Surplus value is the value created by labour beyond the value of the labour power purchased. It is a magnitude of value, not a separate kind of value, and it presupposes the concept defined here. The relation is that this article defines the currency in which surplus value is denominated. Its own treatment is in the complete guide to surplus value.

Abstract labour. Abstract labour is the substance of value, human labour considered without regard to its particular form. Value is the social form that the products of such labour take. The two are not synonyms, though they are often used as though they were: abstract labour is what value is made of, value is what a product has by being its bearer.

Commodity. A commodity is a use value produced for exchange rather than for the producer’s own consumption. The definition contains two clauses and both are necessary. Something produced for one’s own use is a product and not a commodity, however useful. Something offered for exchange but useless to anyone is not a commodity either, because nobody will take it. The commodity is the unit in which the other three terms are all defined, which is why the chapter begins with it.

Can something have use value but no value?

Yes, and the case is common rather than exotic. Air, freely available water, and anything else provided by nature without labour have use value and no value, since no socially necessary labour time is required to obtain them. So does anything produced for the producer’s own consumption, which has use value and is not a commodity.

The converse question, whether something can have value but no use value, is answered no, and the reason is worth stating because it shows how the terms constrain one another. Marx argues that a thing which is useless to anyone can have no value however much labour it absorbed, because the labour spent on it was not socially useful labour, and therefore does not count as part of society’s total labour. Use value is a necessary condition of value without being its source. This is the point at which the framework builds demand into the concept as a condition, and it is the reason the mud-pie objection to the labour theory of value fails on the definitions rather than on any supplementary argument. The related question of whether the labour was performed at socially normal efficiency belongs to the labour theory of value explained, which owns the socially necessary labour time question.

The twofold character of labour, which generates the distinction

What is the twofold character of labour?

The labour embodied in a commodity has two characters at once. As concrete labour, of a specific kind performed with specific tools, it produces use value. As abstract labour, expenditure of human effort in general measured in time, it constitutes value. Marx calls this the pivot on which comprehension of political economy turns.

The second section of the first chapter is where the three terms acquire their foundation, and readers who treat it as a technicality miss why the distinction is not arbitrary.

The argument runs like this. Every commodity has two aspects, use value and value. If those aspects are real rather than imposed by the analyst, then the labour producing the commodity must also have two aspects, since a single undifferentiated activity could not produce two distinct properties. Concrete labour, meaning tailoring as tailoring and weaving as weaving, works on specific materials with specific skills to produce a specific useful thing. The coat’s usefulness comes from what the tailor did, in its particularity. Abstract labour, the same activity considered simply as expenditure of human effort over time, is what the coat has in common with every other product of labour, and it is the substance of value.

The claim doing the work is that the abstraction is not an intellectual operation. When a coat exchanges against a quantity of linen, the market treats tailoring and weaving as commensurable, which means it treats them as quantities of the same thing. That equation is performed in practice, by people who are not thinking about it, every time an exchange occurs. Marx’s term for this in the fetishism section is that the equality of human labours takes the material form of the equal objectivity of the products, and the whole strangeness of the arrangement is that a real social operation happens through the movement of things.

Two consequences for the vocabulary. First, the pairing is systematic: concrete labour to use value, abstract labour to value, with exchange value as the form in which the second pairing announces itself. A student who can produce that mapping has the chapter’s skeleton. Second, the twofold character explains why use value cannot be the source of value even though it is a condition of it. Concrete labour produces the usefulness; abstract labour produces the value; and since it is the same labour under two descriptions, the product necessarily has both properties, with neither reducible to the other.

The three-term grid

The table below is the reference version of the distinction. Each row is one term, and the columns give the definition, the labour that produces it, whether it is qualitative or quantitative, where it is treated in the first chapter, and the error most often attached to it.

Term	Definition	Produced by	Qualitative or quantitative	Where in chapter one	Standard error
Use value	The usefulness of a thing, belonging to it as an object with particular properties, realised in use	Concrete labour, working on specific materials in a specific way	Qualitative; use values are incommensurable and cannot be added	Section one, opening pages; returns in section four	Treating it as subjective utility varying with a person’s preferences
Value	The social substance common to commodities, constituted by socially necessary abstract labour time	Abstract labour, human effort considered without regard to its form	Quantitative; measured in labour time and therefore additive	Section one, after the elimination argument; section two supplies the labour analysis	Treating it as a physical property detectable in the object, or as identical to exchange value
Exchange value	The proportion in which one commodity exchanges against another, the form in which value appears	Neither; it is a relation between commodities, not a product of labour	Quantitative but always relative and plural, expressed in another commodity	Section one’s opening, then developed properly through section three	Treating it as identical to value, or as identical to price

The row most often missing from competing presentations is the middle one, and its absence is what makes the other two look like a simple opposition. The column most often missing is the third, since the qualitative and quantitative distinction is what explains why use values cannot be aggregated into a magnitude comparable with value.

The objection: is this scholastic hair-splitting?

The Part Six requirement applies to a glossary article as much as to any other, so state the objection at full strength.

The objection runs: this is a distinction without a difference, maintained by a tradition that mistakes terminological elaboration for analysis. Whatever Marx called it, what people actually observe is that things are useful and things trade at ratios. Positing a third entity standing behind the ratios, which is not observable, not measurable independently, and known only through the ratios it supposedly explains, adds nothing to the description and cannot be checked. The three-term apparatus is scaffolding around a two-term fact, and the energy spent policing the boundary between value and exchange value could be spent on questions with observable answers.

The objection deserves better than dismissal, because its central point is fair: value on this account is not independently observable, and the argument for it is inferential. The reply is not that the objection is confused but that the distinction has consequences, and the way to demonstrate consequences is to show what collapses without it.

Collapse the distinction and the fetishism argument disappears. That argument is the claim that a social relation between producers appears as a property of things. If exchange value simply is value, then there is no gap between the relation and its appearance, nothing appears as anything else, and the whole section becomes an unmotivated complaint about how markets look. The argument requires that value be something other than its form of appearance, which is precisely the distinction under attack. That argument is set out in commodity fetishism explained.

Collapse it and the derivation of money becomes unintelligible. The third section asks how value, which is not directly visible, gets expressed, and answers by tracing a sequence of forms ending in money. If exchange value were value itself, there would be nothing to express and no sequence to trace, and the hardest section of the chapter would be an elaborate exercise in restating a definition. The derivation is treated in Marx on money and the value form.

Collapse it and the exploitation argument loses its footing. The argument requires that labour power be a commodity with a value determined like any other, and that its use create more value than it possesses. That formulation presupposes a distinction between the value of the commodity purchased and the value its consumption produces. On a two-term reading, where value just is what things fetch, the wage is what labour fetches, and the claim that the worker produces more than the wage becomes a claim about unfair prices rather than a structural result.

Collapse it and you get the price-equals-labour misreading directly. If exchange value is value, then the proposition that socially necessary labour time determines value becomes the proposition that it determines the exchange ratios observed on any given day, which is a claim Marx denied and which is refuted by any afternoon’s data. The most widespread error about Marx’s economics is a downstream consequence of the two-term reduction.

That is four substantive consequences, each of which changes what a major argument in the work says. The objection is right that value is not directly observable and right that the tradition sometimes polices the boundary pedantically. It is wrong that nothing turns on it.

How the terms are used across traditions

A glossary article should say where usage diverges, because a reader will meet these words in several literatures that do not mean the same thing by them.

In classical political economy before Marx, use value and exchange value are a pair and there is no third term. Smith and Ricardo use them roughly as ordinary language does, with exchange value meaning purchasing power in exchange, and the value they theorise is what Marx would call exchange value analysed for its determinants. Reading Marx’s three-term usage back into Smith produces confusion in both directions.

In modern economics the vocabulary has largely been retired. Utility replaced use value with a different concept attached to persons rather than objects, and price replaced exchange value with the money magnitude alone. Value in the mainstream sense usually means either price or, in finance, the present value of a stream of returns. An economist and a Marxist using the word value in the same conversation are almost certainly not discussing the same thing, and the misunderstanding is rarely noticed because both parties assume the word is common ground.

In sociology and cultural studies the pair is used descriptively, often to contrast what something is for with what it sells for, and often to make a critical point about a society in which the second dominates the first. This usage is not illegitimate as sociology, but it is not Marx’s usage, and material written in this register should not be treated as expounding him. The tell is the absence of the third term and any reference to socially necessary labour time.

In value-form theory and the readings deriving from Rubin, the distinctions in this article are handled with more care than anywhere else, and the emphasis falls on value as a social form rather than as an embodied substance. On this reading the insistence that exchange value is a form of appearance is not a fine point but the centre of the theory, since value is held to have no expression independent of the form in which it appears. A reader who has absorbed the three-term distinction from this article is well placed to read that literature; a reader who has absorbed the two-term version will find it incomprehensible.

In everyday and journalistic usage “exchange value” often appears simply as a synonym for market price, sometimes with a critical connotation borrowed from the sociological register. A writer using the term this way should be aware that specialist readers will hear a technical claim, and that the safest course in general prose is to use “price” for the money magnitude and reserve the technical vocabulary for contexts where the distinctions are being drawn.

The paradox of value, and why it is not a paradox here

Why does water have use value but little exchange value?

Water is enormously useful and, where it is freely available, requires no socially necessary labour to obtain, so it has use value and no value, and therefore no exchange value. Where water must be collected, purified, and piped, the labour required gives it value, and it acquires a price accordingly.

The water and diamonds contrast is the classical paradox, and it is worth working through because it is the case examiners set and the case general readers arrive with.

Stated as a paradox it runs: water is essential to life and cheap; diamonds are useless and dear; therefore usefulness cannot govern exchange. Classical political economy felt the force of this and had no satisfactory resolution within its framework, which is one reason the marginal framework was welcomed. The marginalist answer is that choices are made at the margin, so the relevant comparison is between an additional unit of water, of which there are many, and an additional diamond, of which there are few, and once the comparison is put that way the paradox dissolves.

Marx’s framework does not need to resolve the paradox because it never posits the proportionality the paradox refutes. Usefulness is a condition of a thing being a commodity at all, not a determinant of how much value it has. Water where it falls freely requires no labour and has no value. Water delivered to a household through a system of reservoirs, treatment plants, and pipes requires a great deal of labour and has a price reflecting that, which is why the paradox looks different in a city than in a river valley. Diamonds require substantial labour to find, extract, and cut, and their supply cannot be expanded at will, which pushes their price into the territory of monopoly and rent rather than of ordinary value determination.

The instructive part is what the case shows about the framework’s structure. Two things with wildly different usefulness can have similar values, and two things with similar usefulness can have wildly different values, without embarrassment, because usefulness and value are answers to different questions. Any presentation of Marx that makes the water and diamonds case a difficulty for him has misunderstood which relation the theory asserts.

Where each term appears in the text

A precise article should tell a reader where to check, and the first chapter is short enough that the locations can be given exactly.

Section one, titled in the standard English editions as the two factors of the commodity, opens by describing the commodity as an external object satisfying human wants and introduces use value in its first paragraphs. Exchange value appears immediately afterwards, presented initially in the loose sense as the quantitative relation in which use values of one kind exchange for those of another, and Marx notes at once that this relation appears accidental and relative, which is the observation the rest of the section is designed to correct. The elimination argument follows: if a quantity of one commodity equals a quantity of another, a common element must exist in each, and it is neither their physical properties nor their usefulness. Value is introduced as that common element, abstract human labour is identified as its substance, and socially necessary labour time as its measure. By the end of section one all three terms are on the table, and the loose usage of exchange value has been replaced by the strict one.

Section two supplies the labour analysis, distinguishing concrete from abstract labour, and it is where Marx claims to have made his own contribution. It is short and dense and is the section most often skipped.

Section three is the value form, and it is the longest and hardest part of the chapter. Its subject is precisely the relation between value and exchange value: how something that is not directly visible comes to express itself in the body of another commodity, and how that expression develops through a sequence of forms into money. Readers who have the three-term distinction find this section difficult but coherent. Readers who do not find it unintelligible, and the two-term reduction is the usual cause.

Section four is the fetishism passage, which explains why the relation between products appears to participants as a property of the products themselves. It draws on all three terms and cannot be understood without them.

Two textual notes for careful readers. The first edition of 1867 arranged this material differently, with a separate appendix on the value form written during the proofs; the second edition of 1872 rewrote the chapter into the sections described above. And the Critique of the Gotha Programme of 1875 supplies the clearest short statement anywhere in Marx of the distinction between value and wealth, in its opening pages, where the draft programme’s claim that labour is the source of all wealth is rejected on the ground that nature is a source of use values equally. That passage is the one to cite when the value and wealth distinction is at issue, because it is brief, unambiguous, and from Marx’s own hand rather than from an edited manuscript.

What counts as a commodity

What does Marx mean by a commodity?

A commodity is a use value produced for exchange rather than for the producer’s own consumption. Both clauses are necessary: something useless cannot be a commodity because nobody will take it, and something produced for one’s own use is a product rather than a commodity however useful it may be.

The definition looks simple and generates most of the interesting boundary cases in the framework, which is why it is worth pressing.

Consider a gift. It is useful, it is produced by labour, and it changes hands. It is not a commodity, because it was not produced for exchange and no equivalent is returned. Consider a good produced for sale that nobody buys. It was produced for exchange, so it entered the world as a commodity in intention, but its labour was never validated and on the stricter reading it never realised value. Consider something taken from nature and sold without any labour beyond the taking, which is close to the case of unimproved land: it is exchanged, it has a price, and it has no value in the technical sense, which is why Marx treats such prices under rent and monopoly rather than under the value account.

Consider labour power. It is sold, it has a price in the form of the wage, and it has a value determined by the labour time required to produce the worker’s means of subsistence. It is a commodity, and an unusual one, because it is not produced in an enterprise for sale in the way a coat is, and because its use has the property of creating more value than it possesses. That peculiarity is what the whole first volume is built around.

Is a service a commodity in Marx’s sense?

A service produced for sale is a commodity, since nothing in the definition turns on whether the use value has a physical body. The complication is a different distinction: labour exchanged against capital and producing surplus value is productive in Marx’s technical sense, while labour exchanged against revenue is not, and that division cuts across the goods and services boundary rather than following it.

The service question comes up constantly and is usually posed as though the framework were built for factories. It is not built for factories; it is built for commodity production, and the physical form of the use value is explicitly said not to matter. A haircut satisfies a want, is produced by labour, and is sold, so it meets both clauses of the definition. What confuses readers is the productive and unproductive labour distinction, which is about the relation the labour stands in rather than about what it produces. A cook employed by a restaurant selling meals and a cook employed privately by a household perform the same concrete labour in different relations, and Marx places them in different categories. That distinction has its own substantial literature and its own difficulties, and it should be approached as a starting point rather than a settled instrument.

Does something have value if nobody buys it?

On the stricter reading, no. Labour performed privately becomes social labour only when its product is validated in exchange, so a product that finds no buyer represents labour that was never counted as part of society’s total labour, and what the producer counted on never materialises.

This is the point where the three-term distinction pays a dividend that the two-term version cannot. Because value and exchange value are separate, one can say precisely what happens to the unsold commodity: labour was expended, the product has use value for someone in principle, and the value relation was never established because no exchange occurred. The producer’s expectation of value was an expectation about a social validation that did not arrive. On a two-term reading there is nothing to say beyond the observation that it did not sell.

There is a real interpretive dispute here and honesty requires stating it. On the embodied reading, value is deposited in the product during production and the failure to sell means the value cannot be realised, so the value exists and is lost. On the value-form reading associated with Rubin and his successors, value is constituted through the exchange, so an unsold product never had value at all. Marx’s own text supports both formulations at different points, and translations sometimes sharpen or soften the difference. For most purposes the practical consequence is the same, but for anyone writing carefully the distinction between value unrealised and value never constituted is worth marking, and the underlying split in the scholarship is described in the labour theory of value explained.

Value and wealth

What is the difference between value and wealth?

Wealth is a mass of use values and has two sources, labour and nature. Value is a magnitude of socially necessary abstract labour time and has one source, labour. The two can move in opposite directions: a technical advance that halves the labour needed for cloth doubles the wealth obtainable from a given labour expenditure while halving the value of each unit.

This distinction is the cleanest available demonstration that the vocabulary does analytical work, and it is worth dwelling on because it corrects a claim frequently attributed to Marx that he explicitly denied.

The claim is that labour is the source of all wealth. It appears in the draft Gotha programme and Marx attacks it in the first paragraph of his response, pointing out that nature is just as much a source of use values as labour is, and adding a barbed remark about the bourgeois relish with which the false claim is repeated. Anyone who has read those pages will never again write that Marx held labour to be the source of all wealth, and anyone who writes it has probably not read them.

What follows from the distinction is a set of results that look paradoxical and are not. A society can grow steadily richer in use values while the value of its output per unit falls. A productivity improvement enriches society and impoverishes the individual producer who is slow to adopt it. A commodity in a warehouse loses value when a new technique is introduced elsewhere, without anybody touching it. And an economy of abundant goods and falling values is exactly what a framework built around socially necessary labour time predicts, which is a point in its favour as a description of industrial development rather than a difficulty for it.

The distinction also disciplines political argument. Statements of the form “workers produce all the wealth” are, on Marx’s own terms, false, and he says so. Statements of the form “living labour is the sole source of new value” are the framework’s actual claim and are considerably narrower. Confusing the two produces slogans that a well-read opponent can dismantle with a citation from Marx himself.

The distinction applied: three worked cases

Definitions are inert until they are used on something, so here are three cases worked through with all three terms in play.

A bottle of water in a shop. Its use value is its capacity to quench thirst, a property of the water and the container. Its magnitude of socially necessary labour time is that required to extract, purify, bottle, transport, and stock it, which is small but not zero, and which falls as the logistics of bottling improve. Its exchange value is the ratio in which it trades against other commodities, expressed in practice as a price. A rise in that price during a heatwave moves the exchange ratio away from the magnitude it expresses, driven by demand, and it tells you nothing about a change in the labour required. If a new bottling technique halves that labour across the industry, the magnitude falls and the price will follow as competition transmits the change. The three terms let you say which of these movements is which, and a two-term vocabulary cannot.

A hand-knitted jumper made as a present. It has use value, considerable. It has no exchange value, because it enters no exchange relation. Whether it counts as a bearer of the third term is the interesting question, and the answer on the framework is no: the labour was not performed for exchange and is not validated as part of society’s social labour, so the jumper is a product and not a commodity. The knitter may reasonably say the jumper is worth a great deal, and they are speaking of use value and of things the framework does not measure. Nothing is lost by admitting that the categories do not capture everything people mean by worth; a great deal is lost by pretending they do.

An original painting. It has use value in the sense the framework uses, since it satisfies a want. It cannot be reproduced, which puts it outside the scope of the value account, and its price is determined by what a limited pool of buyers will pay, which the framework treats under monopoly price rather than value. The exchange ratio is real and enormous and does not express any such magnitude at all. This is not an embarrassment for the theory; it is the theory’s own stated restriction to reproducible commodities. The frequency with which the case is offered as a refutation is a measure of how rarely the restriction is reported.

The habit these cases are meant to build is simple. When you meet a statement about worth, price, or usefulness, ask which of the three terms it concerns, and whether the speaker has conflated two of them. Most confused writing on this subject conflates value with exchange value, and most confused political rhetoric conflates value with wealth.

Why the two-term reduction persists

It is worth asking why the wrong version is so stable, because the answer tells a reader something about how to use secondary material generally.

The first reason is that the pair maps onto an intuition people already have, the contrast between what something is good for and what it costs, and the intuition is genuinely useful for social criticism. A great deal of writing about commodification, about art and markets, about care and cost, deploys the pair effectively without needing the third term. The vocabulary escaped into general critical usage in that reduced form and has circulated there ever since.

The second is that the third term is hard. Value on Marx’s account is not observable, is defined by an argument rather than by ostension, and requires the concept of abstract labour to be intelligible. A summary written to fit on a revision card cannot carry it, and a summary that includes the phrase without the argument produces something worse than the omission, since the reader then has three words and two concepts.

The third is that the pair is genuinely present in the classical tradition Marx inherited, so a writer working from Smith or from general histories of economic thought will find the pair and not the trio, and may reasonably suppose that Marx used the standard vocabulary in the standard way.

The practical implication is a rule for evaluating sources on this topic. If a source presents use value and exchange value as a pair and does not mention socially necessary labour time or the form of appearance, it is describing classical or sociological usage rather than Marx’s, whatever it claims. That test takes a few seconds and will save a reader from a large class of errors.

Using this in study, teaching, and research

How do you write this distinction in a sentence that earns marks?

The sentence that earns marks names all three terms and states the relation: use value is the usefulness of a thing, value is socially necessary abstract labour time, and exchange value is the form in which value appears when one commodity is set against another. Anything shorter loses the distinction; anything longer loses time.

Examiners set this material in sociology, politics, and economics papers, usually as a definitional component within a larger question on Marx’s theory of capitalism, occasionally as a short-answer item in its own right. The marks are for precision, and precision here has a specific content: whether the candidate produces two terms or three.

The one distinction that earns marks is between value and exchange value, because it is the distinction almost every candidate misses and because a marker can see immediately whether it is understood. A candidate who writes that Marx contrasted the usefulness of a thing with its market price has written the sociological version and will be marked as competent but unremarkable. A candidate who writes that exchange value is the necessary form of appearance of value, and that treating them as identical is what produces the misreading that Marx claimed price equals labour time, has demonstrated something a marker will notice.

The standard trap is the water and diamonds example deployed as a difficulty for Marx. Use it if the question invites it, but use it correctly: it is a difficulty for a theory that makes value proportional to usefulness, which is a theory Marx explicitly rejects, and his framework handles it by pointing out that freely available water requires no labour. A candidate who presents it as a problem Marx failed to solve has attacked the wrong target.

Two further points of technique. Give the German terms once if the paper rewards technical command, since Gebrauchswert, Tauschwert, and Wert show the shared root that the English obscures. And state the relation as a relation rather than a list, since examiners can tell the difference between a candidate who has memorised three definitions and one who understands how they connect. Fuller structural guidance for questions on this material is in the exam and essay guide for Capital Volume One, and this is a topic where a small set of precisely worded definition cards is worth more than pages of notes, so it is worth taking a few minutes to save your notes and build a citation-linked reading list free on VaultBook with the three definitions and their locations attached.

Teaching the three terms without the class collapsing them

This is the exact point at which a course on Capital either works or fails, and the failure mode is predictable. Students arrive with the two-term version, usually from a previous course or from general reading, and they hear the third term as a synonym for one of the first two. Unless the collapse is caught in the first session, everything afterwards is built on it.

The misconception to preempt is that exchange value is what the theory says labour time determines. Students who believe this will interpret every subsequent statement about value as a statement about prices, and will conclude within a week that the theory is obviously false, which is a reasonable conclusion from the premise they were given.

The question that surfaces it reliably: if a new machine halves the labour needed to make a coat, what happens to the coats already sitting in the warehouse? Students holding the two-term version say nothing happens to them, since nobody has touched them and their prices have not yet changed. The framework says their value has fallen, immediately, because value is determined by the labour required under prevailing conditions rather than by the labour historically spent. Working through that gap between what has happened to the value and what has yet to happen to the price makes the distinction concrete in about ten minutes, and it does so with an example students find intuitively gripping rather than scholastic.

The extract that resolves it is the opening of section one, read aloud to the point where value is introduced as the common element, with the class asked to mark where the word exchange value stops meaning what it meant in the first paragraph. Marx changes the usage deliberately and says so, and watching him do it is more convincing than any assertion by the teacher. The sequencing question for the chapter as a whole, including why sections three and four need a separate session, is handled in how to read Capital Volume One.

What a researcher or journalist should verify

Three checks before citing anything on this topic.

Check the translation before quoting any definition from the first chapter. The English renderings differ, and they differ most in exactly the passages where these three terms are being separated. If your argument turns on a phrase, name the translation, and if you are working with the German note that the first edition of 1867 and the second of 1872 present the material differently, so a citation should identify which. Do not quote a definition of value that omits the qualifications about socially necessary labour time, and keep quotations short and attributed to the work and section rather than to a page number that will not travel between editions.

Verify any claim that Marx held labour to be the source of all wealth before repeating it, because he rejects that claim in the opening paragraph of the Critique of the Gotha Programme. This is one of the most commonly misattributed positions in the whole subject, and the correction is short, unambiguous, and easy to check.

Be careful with sources that use the pair without the third term. Sociological and cultural-studies literature deploying use value against exchange value is doing legitimate work in its own register, and it is not evidence of what Marx argued. A researcher building a literature review should separate the exegetical literature from the appropriative literature, since they answer different questions and citing the second for the first is a sourcing error a supervisor will catch. The wider vocabulary of the tradition, with the same discipline applied, is set out in the glossary of key Marxist terms.

For journalists specifically: if you need a one-sentence gloss for a general readership, “Marx distinguished a thing’s usefulness from the labour time embodied in it and from the ratio at which it trades” is accurate and does not commit you to either side of any specialist dispute. Avoid “exchange value” as a synonym for price in copy, since informed readers will hear a technical claim you did not intend.

The terms beyond the first chapter

The vocabulary established in chapter one is used throughout the rest of the work, and a few later applications are worth knowing because they show the distinctions doing work rather than sitting in a definition.

In the analysis of the circulation of commodities, the sequence in which a commodity is sold for money and money is spent on another commodity is described as a movement in which use values change hands while value persists through the changes of form. The point of the analysis is that the person who sells in order to buy is after a use value, while the person who buys in order to sell is after value in a larger quantity, and the difference between those two circuits is what distinguishes simple commodity circulation from the circulation of capital. The vocabulary is doing analytical work: without a distinction between value and its forms, the two circuits could not be told apart, since both consist of a purchase and a sale.

In the treatment of the working day, the distinction between the value of labour power and the value its use creates is a direct application of the separation between a commodity’s value and what its consumption produces. Labour power is bought at its value like anything else; its use value, from the purchaser’s standpoint, is precisely that it creates value. That formulation is only available because use value and value are separate terms, and it is the hinge of the entire exploitation argument, developed in the Marxist theory of exploitation.

In the Grundrisse, the notebooks Marx wrote in the late fifties and never prepared for publication, the same distinctions appear in a more exploratory and less settled form, and readers should treat the vocabulary there as work in progress rather than as the mature position. The status of that manuscript differs from that of the first volume, which Marx wrote, revised, and saw through two German editions himself, and quoting the notebooks as though they carried equal authority is a common sourcing error.

Two adjacent distinctions readers import wrongly

Two other pairs float around this material and get mistaken for the one under discussion.

The first is the contrast between production for use and production for profit, which is a distinction about the purpose of an economic system rather than about properties of commodities. It is a legitimate distinction and it appears in socialist argument constantly, often expressed in the vocabulary of use value against exchange value. The two are related but not identical, and treating them as the same makes the technical vocabulary carry a political thesis it does not by itself establish. Marx’s three terms describe how a commodity-producing society works; the production-for-use contrast is a claim about how a different society might be organised. Sliding between them is how a description turns into an advocacy without anyone noticing, which is exactly the move this series is written to avoid.

The second is the contrast between concrete and abstract, which readers sometimes attach to the wrong nouns. Concrete and abstract in this material describe labour, not value and not commodities. There is no such thing as concrete value or abstract use value in Marx’s usage, and phrases of that shape in secondary literature are a sign that the writer has picked up the adjectives without the argument. The correct pairings are concrete labour with use value and abstract labour with value, and the pairing is systematic because it is the same labour under two descriptions producing the commodity’s two aspects.

A third confusion deserves a brief mention because it is common in cultural writing. Sign value, symbolic value, and brand value are terms from later traditions, some of them explicitly built as departures from Marx, and they are not refinements of his vocabulary. A commodity whose price reflects its brand is, in Marx’s terms, selling above its value, and the interesting question is what social mechanism sustains the divergence. Answering that question may well require concepts he did not supply, and it is entirely legitimate to reach for them, but they should be introduced as additions rather than presented as though Marx’s third term meant something like symbolic significance. It does not; it means socially necessary abstract labour time.

Why value is additive and use value is not

A technical point that clarifies more than its size suggests, and that most treatments skip.

Value is a quantity of one homogeneous thing, socially necessary abstract labour time, and quantities of the same thing can be added. The total value of a country’s annual output is therefore a meaningful magnitude in the framework, at least in principle, and so is the total surplus value, and so is the ratio between them. The whole apparatus of aggregate analysis in the later volumes, including the reproduction schemas and the account of the general rate of profit, depends on this additivity.

Use values are not additive. A coat and a quantity of corn cannot be summed into a quantity of usefulness, because usefulness is qualitatively specific and there is no unit in which coats and corn are both measured. This is not a limitation Marx regrets; it is the fact that generates the problem the chapter solves. If use values could be added, exchange ratios could be derived from them and no third term would be needed.

The consequence is that any aggregate magnitude in this framework is one of labour time, and any statement about the total output of a society being larger or smaller is either a statement about labour time or a loose statement about a bundle of use values that has no single measure. Modern national accounting handles this by aggregating at prices, which is a labour-time magnitude in disguise, and the well-known difficulties of comparing output across periods when the composition of goods changes are the difficulties of trying to aggregate use values. A reader who has grasped why value is additive and use value is not has grasped something about measurement that reaches well beyond Marx.

The same point explains why physical productivity and value creation move differently. A doubling of physical output per worker doubles a bundle of use values and leaves the total value produced by that worker’s hour unchanged, since an hour of average labour produces an hour of value regardless of how many items it is spread across. This is one of the most counter-intuitive results in the framework and it follows directly from the definitions rather than from any additional assumption.

What the vocabulary lets you see

The test of a set of distinctions is whether it makes anything visible that was not visible before, so here are three things the three-term vocabulary shows.

It shows that a society can be simultaneously richer and, by its own measure, producing less of what it counts. Productivity growth raises the mass of use values and reduces the value of each, and if the value of the total falls while the physical mass rises, the framework predicts a system with an increasing quantity of things and a decreasing quantity of the magnitude by which it organises itself. Whether that tension has real consequences is the subject of the crisis literature; that it is visible at all is a consequence of separating value from wealth.

It shows why participants in a market economy experience prices as properties of things rather than as expressions of a social relation. The value relation between producers is real, and it appears in the form of a relation between products, and the appearance is not a mistake anyone makes but a form the relation actually takes. That argument requires the separation of value from its form of appearance, and it is the subject of commodity fetishism explained.

It shows why money is necessary rather than convenient. If value must be expressed and cannot be expressed in itself, then some commodity must serve as the material in which every other commodity’s value is measured, and the derivation of that necessity from the value form is what the third section of the chapter accomplishes. On a two-term reading money is simply a useful intermediary that societies adopt for convenience, which is the standard textbook account and which is precisely the account Marx is arguing against. The derivation is set out in Marx on money and the value form.

Three arguments, each of them central to the work, each of them unavailable without the middle term. That is the answer to the charge that the distinction is scholastic, and it is why a glossary article on three words runs to this length.

Aristotle, and why the analysis has a historical limit

One passage in the third section deserves attention here because it shows what kind of claim Marx thinks he is making, and because it is the clearest evidence that the categories are meant to be historically specific rather than universal.

Marx praises Aristotle for having seen, in the Nicomachean Ethics, that exchange requires commensurability and that commensurability requires a common measure. Aristotle then stops, concluding that the equation of unlike things cannot really be achieved and that the common measure is a practical expedient rather than a genuine identity. Marx’s explanation of the stopping point is not that Aristotle lacked ingenuity. It is that Greek society rested on slavery and on the resulting inequality of human labours, so the thought that all labours might be equal as expenditures of human effort in general had no basis in the society Aristotle was looking at. The concept required a social world in which the equality of human labour had become a practical, everyday fact through generalised commodity production.

Two things follow, and both bear on how the vocabulary should be used.

The categories are historical. If the thought that all labours are commensurable becomes available only in a society where products are routinely equated in exchange, then the analysis describes a particular kind of society rather than production in general. Applying the vocabulary to a subsistence household, a monastery, a manor, or a system of direct allocation is not a bold extension but a misuse, and Marx says so repeatedly. The classical economists’ characteristic error, on his account, was exactly this: they took the categories of commodity production for natural categories of wealth production as such.

The analysis is about a real appearance rather than a mistaken one. Aristotle was not confused; he was looking at a world in which the relation Marx analyses was not yet general. Later observers see the relation because it is there to be seen, and they see it in the form of properties of things because that is the form it takes. This is the connection between the vocabulary established here and the argument of the fourth section, and it is why the two cannot be separated.

A note on the hardest passages and how to get through them

Readers regularly stall at three specific points in the first chapter, and knowing which three helps.

The first stall is the elimination argument in section one, where Marx sets aside physical properties and usefulness and arrives at labour as the remaining common element. Readers with any training in economics object immediately that scarcity and desire were not eliminated, and they are right that the argument as stated in that paragraph does not rule them out. The reading that survives is that section one poses the problem and section three supplies the support, by showing how the equation is actually performed in exchange. A reader who treats section one as a proof will find it question-begging; a reader who treats it as the statement of what needs explaining will find the chapter coherent.

The second stall is the transition from the twofold character of labour to the form of appearance. Section two is short and abstract, and readers finish it without seeing what it was for. It is for section three: having established that the labour has two characters, Marx can ask how the second character, which has no visible body of its own, gets expressed. Reading section two with that question in view converts it from a taxonomy into a step in an argument.

The third stall is the sequence of forms in section three itself, which is genuinely difficult and which defeated Marx’s own first readers to the point that he wrote a separate exposition of it for the first edition. That derivation, and the question of how to read it, belong to Marx on money and the value form, which treats it in full. The practical advice for a reader whose immediate purpose is to get the three terms straight is that sections one and two are sufficient for that purpose, and that section three can be read afterwards with the vocabulary already secure. Attempting all four sections in one sitting is the most common reason a first reading of Capital ends in the first chapter.

A short history of the term in English

The English words readers now use for these three concepts were not fixed at once, and knowing how they settled explains some oddities in older secondary literature.

The Moore and Aveling translation of the first volume, produced under Engels’s supervision and long the standard English text, established most of the vocabulary that persists. It renders the German compounds straightforwardly and its choices became the phrases that circulate in exam papers and textbooks. Its handling of the more Hegelian passages in the first chapter has been criticised for smoothing difficulties that the German preserves, and a reader comparing it with the Fowkes translation will find the differences concentrated in exactly the passages where the three terms are being separated.

Older writing in English, particularly from before the middle of the twentieth century, sometimes uses “value in use” and “value in exchange”, which are Smith’s phrases rather than translations of Marx’s compounds. Those older renderings encourage the two-term reading, because they present both concepts as species of a single thing called value rather than as two distinct concepts with a third standing behind them. A reader meeting this older vocabulary should treat it as a signal that the source is working in the classical tradition rather than expounding Marx.

A further complication is that some sociological literature translates the German compounds while importing definitions from elsewhere, producing texts that use Marx’s words with Smith’s meanings or with a subjective concept of usefulness. The check recommended earlier applies: look for socially necessary labour time and for the phrase form of appearance. If neither is present, the source is not using the vocabulary in the sense this article sets out, whatever its footnotes claim.

None of this is a reason for despair about translations. It is a reason for the small discipline of naming the edition, quoting briefly, and checking a definition against a second rendering when an argument turns on the wording. That discipline costs a few minutes and prevents the most common form of error in writing about this material, which is building a claim on a phrase the author never wrote in the language the reader is reading.

Correct usage, summarised

The three terms, used correctly, work like this. A commodity is a useful thing produced for exchange. Its usefulness is its use value, a qualitative property borne by the object and produced by concrete labour. Its magnitude is the socially necessary abstract labour time it represents, a quantitative magnitude produced by labour considered without regard to its particular form. Its exchange value is the proportion in which it trades against some other commodity, which is the form in which its value appears and which is expressed as price when the other commodity is money.

Use value is a condition of value and not its source. It is not observable directly and is known through the form in which it appears. Exchange value is not value and not price, though it is closely related to both. Wealth is a mass of use values and has two sources; value has one. And a two-term presentation of any of this is a presentation of something other than Marx’s argument.

What remains genuinely disputed is whether value should be understood as constituted in production and merely realised in exchange, or as constituted only through the validation that exchange performs. That question divides serious scholarship and is not settled by the vocabulary. What is not disputed by anyone who has read the chapter is that the three terms are three, and that the middle one is the one the summaries drop.

Frequently Asked Questions

Q: What is the difference between use value and exchange value?

Use value is the usefulness of a thing, its capacity to satisfy a want, which belongs to it as a physical object with particular properties and is realised in use. Exchange value is the proportion in which one commodity trades against another, a relation rather than a property, which a thing acquires only when set against something else. The crucial point that most presentations omit is that these are not two halves of a pair. Standing behind exchange value is a third term, value, which is socially necessary abstract labour time, and exchange value is the form in which value appears. Use value is qualitative and cannot be added across different goods; value is quantitative and additive. Treating the two as a simple opposition, with value left out, produces a version of Marx in which exchange value is what labour time determines, and that version generates most of the standard misreadings of his economics.

Q: Is exchange value the same as value?

No, and the distinction is the one everything else depends on. Value is the social substance of a commodity, constituted by the socially necessary abstract labour time it represents. Exchange value is the form in which that substance appears when the commodity is measured against another. A commodity has value by virtue of how it was produced; it has exchange value only in relation to something else, and it has as many exchange values as there are commodities to be measured against. Marx uses the term loosely at the very start of the first chapter, in the ordinary-language sense, and then tightens it once value has been introduced, saying that exchange value is properly the necessary form of appearance of value. Readers who take the early loose usage as the definition find the later argument contradictory. Readers who follow the tightening find the third section of the chapter coherent.

Q: What is a use value in Marxist terms?

A use value is the usefulness of a thing considered as a property of the thing rather than as a state of mind in the person using it. Iron is hard, corn is nutritious, coal burns, and these properties are what make the objects capable of serving human purposes. The concept is not indifferent to people, since Marx says use value is realised only in use or consumption, but the bearer of the property is the object. This is why the concept is not the same as utility in modern economics, which is a subjective ranking attached to individuals and which has magnitudes that vary with preferences. Use values are qualitative and incommensurable: a coat and a quantity of corn cannot be added into a total quantity of usefulness. That incommensurability is precisely what creates the problem the first chapter addresses, since commodities nevertheless exchange in definite proportions.

Q: What is the twofold character of labour?

The labour that produces a commodity has two characters at once, and Marx describes this as the pivot on which comprehension of political economy turns. As concrete labour it is of a specific kind, performed with specific tools on specific materials, and it produces the use value: the tailoring makes the coat a coat. As abstract labour it is expenditure of human effort in general, measured in time, and it constitutes the value. It is the same activity under two descriptions, which is why a commodity necessarily has both aspects. The claim that gives the argument its force is that the abstraction is not performed by the analyst. When a coat exchanges against linen, the market treats tailoring and weaving as quantities of one thing, and that equation happens in practice among people who are not thinking about it at all.

Q: Can something have use value but no value?

Yes, and the cases are ordinary. Air, freely available water, and anything else obtained from nature without labour have use value and no value, because no socially necessary labour time is required to get them. Anything produced for the producer’s own consumption also has use value without being a commodity and without value in the technical sense, since the labour was not performed for exchange. The reverse case does not arise: on Marx’s account something useless to everyone can have no value however much labour it absorbed, because that labour does not count as part of society’s socially useful labour. Use value is therefore a necessary condition of value without being its source, which is the clause that builds demand into the value concept as a condition rather than as a determinant of magnitude.

Q: What is the difference between value and wealth?

Wealth in the material sense is a mass of use values, and it has two sources, labour and nature. Value is a magnitude of socially necessary abstract labour time, and it has one source, labour. The two are independent and can move in opposite directions: a technical advance that halves the labour needed to produce cloth doubles the physical wealth obtainable from a given expenditure of labour while halving the value of each unit. Marx states this distinction most clearly in the opening pages of the Critique of the Gotha Programme, where he rejects the draft programme’s claim that labour is the source of all wealth on the ground that nature is a source of use values just as much. Anyone who has read that passage will not repeat the misattributed claim that Marx held labour to be the source of all wealth.

Q: Why does water have use value but little exchange value?

Because usefulness and value answer different questions in this framework. Water where it is freely available requires no socially necessary labour time to obtain, so it has no value and therefore no exchange value, however useful it is. Water delivered to a household through reservoirs, treatment plants, and a pipe network requires a great deal of labour, which is why it has a price in a city and not in a river valley. The classical paradox of value, contrasting cheap water with expensive diamonds, is a difficulty for a theory that makes exchange ratios track usefulness, and Marx’s framework never asserts that relation. Diamonds require substantial labour to find and cut, and their supply cannot be expanded at will, which places their prices in the territory of monopoly and rent rather than of ordinary value determination.

Q: What does Marx mean by a commodity?

A commodity is a use value produced for exchange rather than for the producer’s own consumption, and both clauses are necessary. Something useless cannot be a commodity because nobody will take it. Something produced for one’s own use is a product rather than a commodity, however useful. The definition looks simple and generates the framework’s most interesting boundary cases. A gift is useful and changes hands and is not a commodity. A good produced for sale that nobody buys entered the world as a commodity in intention and never had its labour validated. Labour power is a commodity of an unusual kind, sold by the worker, with a value determined by the labour needed to produce the means of subsistence, and with the peculiar property that its consumption creates more value than it possesses.

Q: Is a service a commodity in Marx’s sense?

Yes, if it is produced for sale, because nothing in the definition turns on whether the use value has a physical body. Marx says explicitly that the material form of the useful thing is immaterial to the analysis, so a haircut, a performance, and a repair are commodities on the same footing as a coat. What confuses readers is a different distinction that they mistake for this one: labour exchanged against capital and generating surplus value is productive in Marx’s technical sense, while labour exchanged against revenue is not. That division cuts across the goods and services boundary rather than following it, so a cook employed by a restaurant and a cook employed privately by a household perform the same concrete labour in different categories. That distinction carries its own substantial literature and its own unresolved difficulties.

Q: Does something have value if nobody buys it?

On the stricter reading, no. Labour performed privately becomes social labour only when its product is validated through exchange, so a product that finds no buyer represents labour that was never counted as part of society’s total labour, and the value its producer anticipated never materialises. There is a real interpretive dispute underneath this. On the embodied reading, value is deposited during production and the failure to sell means it cannot be realised, so value existed and was lost. On the value-form reading, value is constituted through exchange, so an unsold product never had value at all. Marx’s own text supports both formulations at different points. For most purposes the practical result is identical, but a careful writer should mark the difference between value unrealised and value never constituted.

Q: What are the German terms for use value, exchange value and value?

Gebrauchswert is use value, literally use-worth. Tauschwert is exchange value. Wert is value. The three share a root, so a German reader sees at once that the first two are compounds built on the third, and that the third is a distinct term standing behind them rather than a summary of the pair. English preserves this reasonably well, since the word value appears in all three renderings, but the compounding is looser and “exchange value” reads naturally as a standalone phrase, which encourages the elision that the German resists. A fourth term worth knowing is Wertform, the value form, which is the subject of the third section of the first chapter and names the whole problem of how value expresses itself. Translations that render it loosely obscure what that section is about.

Q: Why do textbooks leave value out of the distinction?

Three reasons compound. The pair maps onto an intuition readers already have, the contrast between what a thing is good for and what it costs, and that intuition supports a great deal of effective social criticism without needing a third term. The third term is genuinely hard, since value is not observable, is established by argument rather than by pointing, and requires the concept of abstract labour to be intelligible, none of which fits on a revision card. And the pair really is the classical vocabulary, present in Smith and Ricardo before Marx, so a writer working from general histories of economic thought will find two terms and may reasonably assume Marx used them in the standard way. A quick test on any source: if it never mentions socially necessary labour time or the form of appearance, it is not describing Marx’s usage.

Q: Where in Capital are these three terms defined?

All three appear in the first section of the first chapter of the first volume. The section opens with the commodity as an external object satisfying wants, introduces use value in its first paragraphs, then introduces exchange value in the loose sense as the quantitative relation in which use values of one kind exchange for another. The elimination argument follows, and value is introduced as the common element that makes the equation possible, with abstract labour as its substance and socially necessary labour time as its measure. Section two supplies the analysis of concrete and abstract labour. Section three develops the relation between value and exchange value at length, deriving the money form. Section four is the fetishism argument. Chapter numbering differs between editions, so citing by section title as well as number helps readers with a different edition.

Q: What should a teacher do when a class collapses use value and exchange value?

Catch it in the first session, because everything afterwards is built on it. The reliable diagnostic question is what happens to coats already sitting in a warehouse when a new machine halves the labour needed to make coats. Students holding the two-term version answer that nothing happens, since nobody has touched them. The framework says their value has fallen immediately, because value is determined by the labour required under prevailing conditions rather than by the labour historically spent, while the price has yet to adjust. Working through the gap between the change in value and the lagging change in price makes the third term concrete in about ten minutes. Following that with the opening of section one read aloud, asking students to mark where Marx changes his usage of exchange value, shows them the distinction being made in the text rather than asserted by the teacher.

Q: Is use value the same as utility in economics?

No, and substituting one for the other produces immediate confusion. Utility in modern economics is a subjective ranking held by an individual, with magnitudes that vary between people and diminish at the margin. Use value in Marx is a property of an object, arising from its physical characteristics, and it does not have a magnitude that varies with anyone’s preferences. The two concepts attach to different things: one to persons, one to objects. This is why the marginalist apparatus has no role in Marx’s argument, not because he denies that people have preferences but because his concept is answering a different question. A reader who reads use value as utility will find Marx’s claim that use values are incommensurable baffling, since utilities are precisely what the marginalist framework makes commensurable.

Q: Does exchange value mean the same as price?

Not quite. Price is the exchange value of a commodity expressed in money specifically, so price is one exchange value among many rather than a synonym for the category. A coat has an exchange value in linen, in corn, in iron, and in money, and only the last of these is its price. Beyond that, price diverges from value in two distinct ways that the vocabulary is designed to keep separate: randomly, through the fluctuation of supply and demand around a centre of gravity, and systematically, through the formation of a general rate of profit which establishes prices of production above value in capital-intensive industries and below it in labour-intensive ones. Using exchange value as a loose synonym for price collapses both distinctions and is the most common vocabulary error in secondary writing on this material.

Q: Which translation should a researcher check for these terms?

Name whichever you use, and check it specifically at the first chapter, because that is where the English renderings differ most and where the differences bear directly on the three-term distinction. If an argument turns on a phrase, quote it briefly, attribute it to the work and section rather than to a page number that will not survive a change of edition, and say which translation supplied the wording. For work in German, note that the first edition of 1867 presented this material differently from the second edition of 1872, with a separate appendix on the value form in the first, so a citation should identify the edition rather than referring to Capital as though it were a single fixed text. Do not quote a definition of value that has been truncated to remove the qualifications about socially necessary labour time.

Q: Can a use value exist without being a commodity?

Yes, and most use values in history have. Anything produced for the producer’s own consumption is a use value and not a commodity, since it enters no exchange. Anything provided by nature without labour, such as air or a wild spring, is a use value and not a commodity. Goods distributed by custom, by obligation, or by direct allocation within a household or a planned system are use values that never take the commodity form. This is why Marx insists that the commodity is a historically specific form rather than a natural category of production, and why he treats the categories of value analysis as applying to a particular mode of production rather than to production in general. Applying the value vocabulary to a subsistence household or to a directly planned economy is a category error rather than an extension.