The quart is an imperial and US customary unit of volume equal to a quarter of a gallon. Since gallons of various sizes have historically been in use, quarts of various sizes have also existed. Three of these quarts remain in current use, all approximately equal to one liter.


United States liquid quart
The US liquid quart is defined as one quarter of a US liquid gallon.

1 US liquid quart  = 1/4 US liquid gallons
= 2 US liquid pints
= 4 US liquid cups
= 32 US fluid ounces
= 57.75 cubic inches
= 0.946352946 litres
33.307 Imperial fluid ounces
United States dry quart
The US dry quart is defined as 1/32 of a US bushel.

1 US dry quart  = 1/32 US bushels
= 1/4 US dry gallons
= 2 US dry pints
= 67.2 cubic inches
= 1.101220942715 litres
38.758 Imperial fluid ounces
Imperial quart
The imperial quart, used for both liquid or dry capacity, is defined as one quarter of an Imperial gallon.

1 imperial quart  = 1/4 Imperial gallons
= 2 Imperial pints
= 40 Imperial fluid ounces
= 1.1365225 litres
69.355 cubic inches
38.430 US fluid ounces

Winchester quart

A Winchester quart is an archaic measure, roughly equal to 2 Imperial quarts or 2.25 litres. The 2.5 litre bottles, in which laboratory chemicals are supplied, are sometimes referred to as Winchester quart bottles although they contain slightly more than a traditional Winchester quart.

Maritimer English

In Maritimer English, a quart refers to a quantity of alcohol measuring approximately 750 mL, called a two-six (26 fluid ounces) in the rest of Canada. This is similar in size to the archaic British wine and spirits measure the "reputed quart", which is imperial quart or ~757.7 ml

Notes and references

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