Converters
Gallons to Liters Converter
Convert US gallons to liters and liters to gallons. Useful for fuel, cooking, and international travel.
Liters
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How It Works
1 US gallon = 3.78541 liters. Multiply gallons by 3.78541 to get liters. Note: 1 Imperial (UK) gallon = 4.54609 liters β slightly different.
Example
A full 15-gallon car tank = 56.78 liters. 1 liter of water weighs exactly 1 kilogram.
Frequently Asked Questions
Is a US gallon the same as a UK gallon?
No. A US gallon = 3.785 liters. A UK (Imperial) gallon = 4.546 liters. This affects fuel economy comparisons between US mpg and UK mpg.
How many gallons is a 2-liter bottle?
2 liters Γ· 3.785 = 0.528 US gallons, or about half a US gallon.
How do I convert fuel economy (mpg to L/100km)?
L/100km = 235.215 Γ· mpg. A car getting 30 mpg uses 235.215 Γ· 30 = 7.84 L per 100 km.