What is a liters to gallons converter?
A liters to gallons converter is an online tool that turns a volume measured in liters (L) into its equivalent in US gallons (gal), and back again. The liter is a metric unit used almost everywhere in the world, while the gallon is a US customary unit common for fuel, paint, and beverages in the United States. This converter bridges the two systems so you can compare tank sizes, fuel prices, or recipe volumes with confidence.
Enter a value into either field and the other updates in real time — there is no button to press.
How does it work?
One US gallon is defined as exactly 3.78541 liters. Going the other way, one liter equals about 0.264172 US gallons. Because both quantities measure the same physical volume, the conversion is a single multiplication or division.
The US gallon is smaller than the UK (imperial) gallon, which is about 4.54609 liters. This converter defaults to the US gallon; use the unit selector to switch to the UK gallon when needed.
Formula
To convert liters to US gallons:
To convert US gallons to liters:
Worked examples
Example 1: 10 liters to US gallons
So 10 liters is about 2.64 US gallons.
Example 2: 1 US gallon to liters
A single US gallon therefore holds 3.78541 liters.
Conversion table
| Liters (L) | US gallons (gal) |
|---|---|
| 1 | 0.26417 |
| 5 | 1.32086 |
| 10 | 2.64172 |
| 20 | 5.28344 |
| 40 | 10.56688 |
| 50 | 13.20860 |
| 100 | 26.41720 |
Notes
- The US gallon (3.78541 L) and the UK gallon (4.54609 L) are different — a US gallon is about 83% of a UK gallon.
- Fuel economy figures often need this conversion when comparing miles per gallon with liters per 100 kilometers.
- To go the other direction, see the gallons to liters converter.
Frequently asked questions
How many gallons are in 10 liters?
10 liters equal about 2.64172 US gallons.
How many liters are in 1 US gallon?
There are exactly 3.78541 liters in one US gallon.
What is the difference between US and UK gallons?
A US gallon is 3.78541 liters, while a UK (imperial) gallon is about 4.54609 liters. Select the correct unit before converting.
How do I convert 50 liters to gallons?
Divide by 3.78541: 50 / 3.78541 ≈ 13.2086 US gallons.