The cord is a unit of dry volume used in Canada and in the United States to measure firewood. One cord is defined as 128 foot³ (~3.62 m³), corresponding to a woodpile 4 foot wide × 4 foot high × 8 foot long. In the United States, the cord is defined by statute in most states. In the metric system, wood is usually measured in steres or cubic metres: 1 stere = 1 m³ ≈ 0.276 cords. The former Weights and Measures office in Middlesex, England. ... Dry measures are units of volume used to measure bulk commodities which are not liquid. ... For other uses, see Volume (disambiguation). ... Wood burning is the largest current use of biomass derived energy. ... A foot (plural: feet or foot;[1] symbol or abbreviation: ft or, sometimes, ′ – a prime) is a unit of length, in a number of different systems, including English units, Imperial units, and United States customary units. ... The Statute of Grand Duchy of Lithuania A statute is a formal, written law of a country or state, written and enacted by its legislative authority, perhaps to then be ratified by the highest executive in the government, and finally published. ... The International System of Units (symbol: SI) (for the French phrase Syst me International dUnit s) is the most widely used system of units. ... The cubic metre (symbol m³) is the SI derived unit of volume. ... The cubic meter (symbol m³) is the SI derived unit of volume. ...

Another measure of wood volume is the sheldon cord (sometimes called a long cord), which usually does not have a legal definition, and its size varies regionally but is always larger than the regular cord.

Other non legal definitions of firewood volume include standing cord, kitchen cord, running cord, fencing cord, and country cord. According to the Weights and Measures Act in Canada, the only true definable cord is a full cord and all other fractions thereof.

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