Gallon vs. Liter

Gallon and Liter Definitions
Gallon
A unit of volume in the US Customary System, used in liquid measure, equal to 4 quarts (3.785 liters).
Liter
A metric unit of volume equal to approximately 1.056 liquid quarts, 0.908 dry quart, or 0.264 gallon. See Table at measurement.
Gallon
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.
Liter
(American spelling) litre, one cubic decimeter.
Gallon
A container with a capacity of one gallon.
Liter
A measure of capacity in the metric system, being a cubic decimeter, equal to 61.022 cubic inches, or 2.113 American pints, or 1.76 English pints.
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Gallon
The contents of such a container.
Liter
A metric unit of capacity equal to the volume of 1 kilogram of pure water at 4 degrees centigrade and 760 mm of mercury (or approximately 1.76 pints)
Gallon
A unit of volume, equivalent to eight pints
Gallon
Exactly 4.54609 liters; an imperial gallon
Gallon
(US) 231 cubic inches or approximately 3.785 liters for liquids (a "U.S. liquid gallon")
Gallon
(US) one-eighth of a U.S. bushel or approximately 4.405 liters for dry goods (a "U.S. dry gallon").
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Gallon
A large quantity (of any liquid).
The pipe burst and gallons of water flooded into the kitchen.
Gallon
A measure of capacity, containing four quarts; - used, for the most part, in liquid measure, but sometimes in dry measure.
Gallon
United States liquid unit equal to 4 quarts or 3.785 liters
Gallon
A British imperial capacity measure (liquid or dry) equal to 4 quarts or 4.545 liters