Coquart

A coquart (sometimes spelled coquard in older texts) is a historical French unit of liquid volume. It was primarily used in the wine trade and other similar mercantile activities. The coquart's precise volume varied depending on the region and the specific commodity being measured, making it an inexact but nonetheless common measurement.

Typically, a coquart was a fractional unit of a larger standard, such as the pinte or the setier. Its exact equivalent in modern units (liters or gallons) is difficult to ascertain without specifying the location and time period in which the coquart was used. Historical documents relating to trade and taxation are the most likely sources for defining its value in a particular context.

The term is now largely archaic, though it may be encountered in historical records and academic research pertaining to French commerce and viticulture prior to the standardization of weights and measures under the metric system.