Gallon Conversions

Use this easy and mobile-friendly calculator to convert between Gallons and other units of Volume.
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1 U.S. Gallon ≈
3.7854118 Liters
result rounded
Decimal places
A U.S. gallon is a unit of volume equal to 128 U.S. fluid ounces, or about 3.785 liters. It should not be confused with the imperial gallon used in the United Kingdom.
Common abbreviations: gal, US gal
A liter, or litre, is a unit of volume in the metric system. A liter is defined as the volume of a cube that is 10 centimeters on a side. There are about 3.785 liters in a U.S. gallon.
Abbreviation: L