Exchange-value is the quantitative ratio at which use-values are exchanged for one another. One coat exchanges for twenty yards of linen; one hour of a lawyer’s time exchanges for three hours of a cleaner’s time. Karl Marx distinguished exchange-value from use-value to show that the commodity is not a simple useful thing but a social form that carries within it a specific set of relations.
Exchange-value appears to be a property of the commodity — as though the coat simply “is worth” twenty yards of linen. But ratios of exchange express relations among producers, not among things. The question Marx poses is: what makes qualitatively different use-values commensurable? His answer is abstract labor — labor considered not as specific skilled activity (weaving, baking, building) but as undifferentiated expenditure of human effort, measured by time. Exchange-value is the form in which abstract labor appears on the market.
The dominance of exchange-value over use-value is not a universal feature of human economies. It is specific to commodity production, where goods are made for sale rather than for direct use. In economies organized through reciprocity or commons, the social meaning of an exchange is not exhausted by a price. A gift carries obligations; a shared resource carries responsibilities. The market relation, by contrast, closes at the point of transaction — once the price is paid, the relation ends.
Related terms
- use-value — the qualitative counterpart exchange-value abstracts from
- commodity-fetishism — the appearance that exchange-value is an inherent property of things
- surplus-value — what capital extracts through the difference between labor’s exchange-value and its product
- wage-labor — the relation in which labor-power itself acquires an exchange-value
- reciprocity — exchange organized by ongoing relation rather than price