Enter a volume, pick a direction and get the result in liters or US gallons. The factor used is shown with the result.
Result
This result is an estimate only. Check with your bank or the relevant authority before making decisions.
How it is calculated
Liters to US gallons: divide by 3.785411784 (about 0.264172 per liter)
US gallons to liters: multiply by 3.785411784
For a UK (imperial) gallon, the factor is 4.54609 liters, so the number of gallons is smaller. For smaller volumes, see the liters to milliliters converter, and for trip fuel costs, use the fuel cost calculator.
Worked example
10 liters ÷ 3.785411784 = 2.6417 US gallons
1 US gallon × 3.785411784 = 3.7854 liters
Why your number may differ
US and UK gallons are different sizes, so check which one a recipe, fuel price or car manual uses. The result is shown to four decimal places.
Frequently asked questions
How many liters are in a US gallon?
One US gallon is exactly 3.785411784 liters.
Is a UK gallon the same?
No. The UK (imperial) gallon is 4.54609 liters, about 20% larger than the US gallon. This converter uses the US gallon.
How do I convert gallons to liters?
Multiply the US gallons by 3.785411784. For a quick guide, 1 gallon is a little under 4 liters.