Liters to Gallons Converter
Convert liters (L) to US liquid gallons instantly. Enter any volume to see the gallon equivalent, reverse value and common conversion reference.
Enter a volume in liters. This calculator converts to US liquid gallons, not Imperial gallons.
How to Convert Liters to Gallons
To convert liters to US liquid gallons, multiply the number of liters by approximately 0.2641720524.
The calculator above performs this conversion automatically and keeps additional decimal precision available before displaying a readable result.
How to Use the Converter
- Enter the volume in liters.
- Select Convert, or simply type and let the result update automatically.
- Read the result in US liquid gallons.
- Use the reverse check to confirm the converted value returns to the original liter amount.
- Select Copy Result if you want to copy the conversion.
Liters to Gallons Formula
One US liquid gallon is defined as 231 cubic inches, which corresponds to exactly 3.785411784 liters. Therefore:
The inverse relationship is approximately:
Example: Convert 10 Liters to Gallons
For 10 liters:
Liters to US Gallons Conversion Table
| Liters (L) | US Gallons (gal) |
|---|---|
| 1 L | 0.264172 gal |
| 2 L | 0.528344 gal |
| 5 L | 1.320860 gal |
| 10 L | 2.641721 gal |
| 20 L | 5.283441 gal |
| 25 L | 6.604301 gal |
| 50 L | 13.208603 gal |
| 100 L | 26.417205 gal |
| 200 L | 52.834410 gal |
US Gallons vs Imperial Gallons
The word gallon can refer to different units. This ToolZippy page converts liters specifically to the US liquid gallon.
| Unit | Equivalent in Liters | Where It Is Commonly Encountered |
|---|---|---|
| US liquid gallon | 3.785411784 L | United States volume measurements |
| Imperial gallon | 4.54609 L | Some UK/Commonwealth contexts and historical usage |
Important: US and Imperial gallons are not interchangeable. If a specification, fuel figure, tank capacity or other measurement says only “gallons,” identify which gallon system is intended before converting.
How to Convert Gallons Back to Liters
To reverse the calculation, multiply US liquid gallons by 3.785411784.
For example, 5 US gallons equals approximately 18.9271 liters.
What Is a Liter?
The liter (L) is a metric unit of volume. One liter equals one cubic decimeter, or 1,000 cubic centimeters. Liters and milliliters are widely used for liquid quantities, container capacities and many everyday measurements.
What Is a US Liquid Gallon?
The US liquid gallon is a unit of volume used in the US customary system. One US liquid gallon contains four US quarts and equals exactly 231 cubic inches, or 3.785411784 liters.
Where Liters-to-Gallons Conversions Are Useful
- Comparing fuel tank capacities listed in different unit systems.
- Reading liquid container capacities and product specifications.
- Converting water-storage or tank volumes.
- Comparing automotive specifications from different markets.
- Working with household or workshop liquid measurements.
- Checking travel-related fuel quantities where different units are used.
How Many Decimal Places Should You Use?
The appropriate rounding depends on the purpose of the conversion. For a quick everyday estimate, two or three decimal places may be sufficient. For technical calculations, retain enough precision for the required application and round at the end.
For example, 10 liters can be written as approximately 2.64 US gal for a simple estimate or 2.64172 US gal when more detail is useful.
Extra decimal places in a converted result do not make the original measurement more accurate. The precision of the starting measurement should also be considered.
Related Volume & Unit Converters
Liters to Gallons FAQs
How many US gallons are in 1 liter?
One liter is approximately 0.2641720524 US liquid gallons.
How do I convert liters to gallons?
Multiply the number of liters by approximately 0.2641720524 to convert liters to US liquid gallons.
How many gallons are 10 liters?
10 liters is approximately 2.64172 US liquid gallons.
How many liters are in one US gallon?
One US liquid gallon equals exactly 3.785411784 liters.
Does this converter use US or Imperial gallons?
This calculator uses US liquid gallons. Imperial gallons are larger and use a different conversion factor.
What is the difference between a US gallon and an Imperial gallon?
A US liquid gallon equals 3.785411784 liters, while an Imperial gallon equals 4.54609 liters. They should not be treated as the same unit.
Can I enter decimal liters?
Yes. The converter accepts whole numbers and decimal values, such as 2.5 L or 18.75 L.
Can I convert gallons back to liters?
Yes. For US liquid gallons, multiply the gallon value by 3.785411784. You can also use ToolZippy’s Gallons to Liters Converter.
Why might a converted value be rounded?
The exact mathematical result can contain many decimal places. The tool formats the displayed value for readability while retaining useful precision.
Is the Liters to Gallons Converter free?
Yes. The converter is free to use in a modern web browser without creating an account.