Convert quart to gallon (2024)

Convert quart to gallon (1)

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Please provide values below to convert quart (US) [qt (US)] to gallon (US) [gal (US)], or vice versa.


Definition: The quart (symbol: qt) is a unit of volume in the United States customary and imperial systems of measurement. Multiple definitions of the quart exist. In the US, a liquid quart is equal to approximately 0.946353 liters and a dry quart is equal to approximately 1.101221 liters. In the UK, the imperial quart is equal to 1.136523. In both the UK and the US, the quart is equal to ¼ of its respective gallon.

History/origin: The quart is based on the gallon, the definition of which has changed throughout history based on the commodity being referenced. The current definition of the US quart is based on the English wine gallon. This same definition was used for the imperial quart up until 1824 when the UK re-defined the imperial gallon.

Current use: The respective versions of the quart are used mainly in the United States and the United Kingdom, though in the UK, the use of the liter is now mandated as a result of metrication.

Gallon (US)

Definition: A gallon is a unit of volume specifically regarding liquid capacity in both the US customary and imperial systems of measurement. The US gallon is defined as 231 cubic inches (3.785 liters). In contrast, the imperial gallon, which is used in the United Kingdom, Canada, and some Caribbean nations, is defined as 4.54609 liters. In both systems, the gallon is divided into four quarts. Quarts are then divided into two pints and pints are divided into two cups. A cup is comprised of two gills, making one gallon equal four quarts, eight pints, sixteen cups, or thirty-two gills. Further differentiating the US and the imperial gallon, a US gill is divided into four fluid ounces, while an imperial gallon is divided into five. A US fluid ounce is therefore 1/128 of a US gallon while an imperial fluid ounce is 1/160 of an imperial gallon.

History/origin: The term gallon most closely originates from "galon" in Old Northern French and developed as a system for measuring wine and beer in England, resulting in measures such as the wine gallon, ale gallon, and imperial gallon.

Current use: In the United States (US), gallons are often used for larger containers, such as half gallon tubs of ice cream or one-gallon cartons of milk. Gallons are also widely used in fuel economy expression in the US, as well as some of its territories. The imperial gallon is used even more sparingly than the US gallon, with most countries around the world using liters when referencing fuel.

Quart (US) to Gallon (US) Conversion Table

Quart (US) [qt (US)]Gallon (US) [gal (US)]
0.01 qt (US)0.0025 gal (US)
0.1 qt (US)0.025 gal (US)
1 qt (US)0.25 gal (US)
2 qt (US)0.5 gal (US)
3 qt (US)0.75 gal (US)
5 qt (US)1.25 gal (US)
10 qt (US)2.5 gal (US)
20 qt (US)5 gal (US)
50 qt (US)12.5 gal (US)
100 qt (US)25 gal (US)
1000 qt (US)250 gal (US)

How to Convert Quart (US) to Gallon (US)

1 qt (US) = 0.25 gal (US)
1 gal (US) = 4 qt (US)

Example: convert 15 qt (US) to gal (US):
15 qt (US) = 15 × 0.25 gal (US) = 3.75 gal (US)

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Convert quart to gallon (2024)
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