US Gallons to Litres Converter
Type a value in US gallons to see it in litres. It works both ways: type in the litres box to convert back.
Formula
To convert US gallons to litres, multiply by 3.785411784.
1 US gal = 3.785411784 L and 1 L = 0.264172052358 US gal.
US gallons to litres table
| US gallons | Litres |
|---|---|
| 1 US gal | 3.785412 L |
| 2 US gal | 7.570824 L |
| 3 US gal | 11.35624 L |
| 5 US gal | 18.92706 L |
| 10 US gal | 37.85412 L |
| 12 US gal | 45.42494 L |
| 15 US gal | 56.78118 L |
| 20 US gal | 75.70824 L |
| 50 US gal | 189.2706 L |
| 100 US gal | 378.5412 L |
Worked examples
2 US gal in litres
2 US gal
7.570824 L
2 × 3.785411784 = 7.570823568
12 US gal in litres
12 US gal
45.42494 L
12 × 3.785411784 = 45.42494141
50 US gal in litres
50 US gal
189.2706 L
50 × 3.785411784 = 189.2705892
About US Gallons to Litres Converter
This converter turns US gallons into litres as you type, and works the other way too: type in the litres box to convert back. To convert US gallons to litres, multiply by 3.785411784. For example, 2 US gal is 7.570824 L, and 12 US gal is 45.42494 L.
Volume conversions are easy to get wrong because UK and US gallons, pints and fluid ounces are different sizes. Each page here says which system it uses. Both units have exact definitions, so the converter gives an exact result, rounded only for display. Use the table below for common values, or set the decimal places to round the answer for a form or a label.
How to use US Gallons to Litres Converter
- Type the amount in US gallons in the first box.
- Read the answer in litres in the second box and in the result line below.
- To convert the other way, type in the litres box instead, or use the swap button to open the litres to US gallons page.
- Choose a number of decimal places if you need a rounded figure, then copy the result line.
Common uses
- Following a recipe from another country
- Working out a drink size or a bottle size
- Comparing fuel economy or tank sizes
- Converting fuel, paint or liquid quantities
Frequently asked questions
How many litres are in one US gallon?
There are 3.785411784 litres in one US gallon. This figure is exact, because both units have fixed definitions.
How do I convert US gallons to litres?
To convert US gallons to litres, multiply by 3.785411784. For example, 50 US gal is 189.2706 L.
How do I convert litres to US gallons?
Going the other way, divide by 3.785411784 (the same as multiplying by 0.2641720524). The litres to US gallons converter does this for you.
What is 15 US gal in litres?
15 US gal is 56.78118 L.
Why are UK and US gallons different?
The UK redefined its gallon in 1824 as the volume of 10 pounds of water, about 4.546 litres. The US kept an older wine gallon of 231 cubic inches, about 3.785 litres. Pints and fluid ounces differ for the same reason.