Gallons to Liters Converter
Convert gallons to liters, or liters to gallons, instantly.
Liters
18.9271
Volume Conversion Formula
Liters = gallons × 3.78541. Gallons = liters ÷ 3.78541.
Worked example
Convert 5 gallons to liters.
5 × 3.78541 ≈ 18.927
5 gallons ≈ 18.927 liters
Frequently Asked Questions
How many liters are in a gallon?
1 US gallon = 3.78541 liters.
How many gallons are in a liter?
1 liter = 0.264172 US gallons.
Is a US gallon the same as a UK (imperial) gallon?
No. A US gallon is 3.78541 liters, while a UK imperial gallon is larger at 4.54609 liters. This calculator uses the US gallon.
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