Liters to Gallons Converter
Convert liters to US gallons. Enter a volume in liters and the tool returns US gallons, using the US liquid gallon of 3.785 liters. It is handy for fuel economy, aquarium and pool volumes, and recipe scaling when a metric volume needs to be read in the gallons familiar in the United States.
Calculate
Default result: 2.6417 gal
Liters to Gallons Converter · Result
calculators.dev
US gallons
10 l
Reviewed by the calculators.dev team · Last updated 2026-06-23
How to calculate
Type the volume in liters and read the US gallons below. To convert by hand, divide liters by 3.785: a 40-liter fuel tank is about 10.57 US gallons. To convert US gallons back to liters, multiply by 3.785. The result updates live so you can compare several volumes quickly.
US gallons = liters ÷ 3.785411784, where 3.785411784 is the exact number of liters in one US liquid gallon. Equivalently, liters = US gallons × 3.785411784.
Example calculation
10 liters divided by 3.785411784 liters per US gallon is about 2.6417 US gallons. The US liquid gallon is defined as exactly 3.785411784 liters, so liters convert to gallons by dividing by that figure.
- result
- 2.6417 gal
Assumptions
- This page uses the US gallon (3.785411784 L). For the UK / imperial gallon, which is larger at 4.54609 L, divide liters by 4.546 instead — a UK gallon is about 20% bigger than a US gallon, so using the wrong one is a significant error.
- The US liquid gallon is meant here, not the rarely used US dry gallon, which is a different volume.
- Displayed gallons are rounded for readability; the underlying value keeps full precision.
Common mistakes
- Mixing up US and UK gallons — they differ by about 20%, so a fuel-economy or tank figure can be badly off if the wrong gallon is used.
- Using a rounded 3.8 or 4 liters per gallon, which loses accuracy on larger volumes.
- Reversing the direction — divide by 3.785 for gallons, multiply by 3.785 for liters.
Frequently asked questions
How many liters is 1 US gallon?
One US liquid gallon is exactly 3.785411784 liters, about 3.79 liters.
What is 10 liters in US gallons?
10 liters is about 2.6417 US gallons (10 ÷ 3.785411784).
Is a US gallon the same as a UK gallon?
No. A UK (imperial) gallon is 4.546 liters, about 20% larger than the 3.785-liter US gallon. This converter uses the US gallon.
Which gallon does my car's fuel economy use?
US miles-per-gallon figures use the US gallon, while UK figures use the larger imperial gallon, so the same mpg number means different efficiency in each country.