Quart vs. Gallon — What's the Difference?

The quart (symbol: qt) is an English unit of volume equal to a quarter gallon. Three kinds of quarts are currently used: the liquid quart and dry quart of the US customary system and the imperial quart of the British imperial system.

The gallon is a unit of volume in imperial units and United States customary units. Three different versions are in current use: the imperial gallon (imp gal), defined as 4.546 09 litres, which is used in the United Kingdom, Canada, and some Caribbean countries; the US gallon (US gal) defined as 231 cubic inches (exactly 3.785 411 784 litres), which is used in the US and some Latin American and Caribbean countries; and the US dry gallon ("usdrygal"), defined as 1/8 US bushel (exactly 4.404 883 770 86 litres).There are four quarts in a gallon and eight pints in a gallon, which have different volumes in different systems.

A unit of volume or capacity in the US Customary System, used in liquid measure, equal to 1/4 gallon or 32 ounces (0.946 liter).

A unit of volume in the US Customary System, used in liquid measure, equal to 4 quarts (3.785 liters).

A unit of volume or capacity in the US Customary System, used in dry measure, equal to 1/8 peck or 2 pints (1.101 liters).

A unit of volume in the British Imperial System, used in liquid and dry measure, equal to 4 quarts (4.546 liters). See Table at measurement.

A unit of volume or capacity in the British Imperial System, used in liquid and dry measure, equal to 1.201 US liquid quarts or 1.032 US dry quarts (1.136 liters). See Table at measurement.

A container with a capacity of one gallon.

A container having a capacity of one quart.

The contents of such a container.

The contents of such a container.

A unit of volume, equivalent to eight pints

A unit of liquid capacity equal to two pints; one-fourth (quarter) of a gallon. Equivalent to 1.136 liters in the UK and 0.946 liter (liquid quart) or 1.101 liters (dry quart) in the U.S.

Exactly 4.54609 liters; an imperial gallon

(cards) Four successive cards of the same suit.

(US) 231 cubic inches or approximately 3.785 liters for liquids (a "U.S. liquid gallon")

(obsolete) A fourth; a quarter; hence, a region of the earth.

(US) one-eighth of a U.S. bushel or approximately 4.405 liters for dry goods (a "U.S. dry gallon").

The fourth part; a quarter; hence, a region of the earth.

A large quantity (of any liquid).

A measure of capacity, both in dry and in liquid measure; the fourth part of a gallon; the eighth part of a peck; two pints.

A measure of capacity, containing four quarts; - used, for the most part, in liquid measure, but sometimes in dry measure.

A vessel or measure containing a quart.

United States liquid unit equal to 4 quarts or 3.785 liters

In cards, four successive cards of the same suit. Cf. Tierce, 4.

A British imperial capacity measure (liquid or dry) equal to 4 quarts or 4.545 liters

A United States liquid unit equal to 32 fluid ounces; four quarts equal one gallon

A British imperial capacity measure (liquid or dry) equal to 2 pints or 1.136 liters

A United States dry unit equal to 2 pints or 67.2 cubic inches