About the Liters to Gallons Converter
This liters to gallons converter shows a volume in both US gallons and imperial (UK) gallons at the same time, because the two are different sizes: a US gallon is 3.785 liters while an imperial gallon is 4.546 liters. It also shows US quarts and cups for smaller amounts.
Use it to compare fuel prices and tank sizes between countries, size an aquarium, rain barrel or water tank, convert a car's fuel capacity, or scale up a recipe or brewing batch written in metric.
Make sure you pick the right gallon: US sources (and most car and product specs sold in the US) use the US gallon, while older UK and some Commonwealth references use the larger imperial gallon.
With the default inputs, the us gallons is 13.2086 gal. Change any value above to recalculate instantly.
How to use the liters to gallons converter
- 1Enter the volume in liters.
- 2Read US gallons for American sources.
- 3Read imperial gallons for UK sources.
- 4Use quarts or cups for kitchen-sized amounts.
Formula and method
The US liquid gallon is defined as 231 cubic inches, which is exactly 3.785411784 liters. The imperial gallon used in the UK is defined as exactly 4.54609 liters. Dividing liters by the relevant definition gives the number of gallons.
A US gallon holds 4 US quarts or 16 US cups (236.588 mL each), so quarts are US gallons × 4 and cups are milliliters ÷ 236.5882365.
- L
- Volume in liters
- US gal
- US liquid gallons (3.785 L)
- imp gal
- Imperial gallons (4.546 L)
Worked examples
50-liter fuel tank
50 ÷ 3.785411784 = 13.21 US gallons, or 50 ÷ 4.54609 = 11.00 imperial gallons.
Exactly one US gallon
3.785 L is one US gallon — 4 quarts or 16 cups — but only 0.833 of an imperial gallon.
200-liter water barrel
200 L is 52.8 US gallons or 44 imperial gallons. The common steel drum is sold as "200 L" in metric markets and "55 gallon" in the US; its full brim capacity is about 208 L.
Frequently asked questions
How many liters are in a gallon?+
A US gallon is 3.785 liters and an imperial (UK) gallon is 4.546 liters. Always check which one your source uses.
Why are US and UK gallons different?+
The US kept the old English wine gallon of 231 cubic inches, while Britain adopted the larger imperial gallon in 1824, defined today as exactly 4.54609 liters.
How many gallons is 1 liter?+
One liter is 0.264172 US gallons or 0.219969 imperial gallons — roughly a quarter of a US gallon.
How do I convert liters to gallons quickly?+
For US gallons divide by about 3.8 (or multiply by 0.264). For imperial gallons divide by about 4.5 (or multiply by 0.22).
Sources