How to Convert Liters to Gallons

Liters and gallons are both units of volume, but the word gallon can refer to different standards. For most online everyday conversions, the US liquid gallon is the intended unit unless another type is specified.

Liters to US Gallons Formula

Divide liters by 3.785411784.

US Gallons = Liters ÷ 3.785411784

Common Examples

• 1 liter ≈ 0.264172 US gallons
• 5 liters ≈ 1.32086 US gallons
• 10 liters ≈ 2.64172 US gallons
• 20 liters ≈ 5.28344 US gallons

US Gallon vs Imperial Gallon

A US liquid gallon is about 3.785 liters, while an imperial gallon is about 4.546 liters. Always check which gallon standard is being used before converting.

Example

Ten liters divided by 3.785411784 gives approximately 2.64172 US gallons.

Where This Conversion Helps

Liters-to-gallons conversion is useful for fuel quantities, containers, recipes, product packaging, and international measurements.

Check the Gallon Standard Before Converting

Liters-to-gallons conversion needs one extra piece of information: which gallon? The US liquid gallon and imperial gallon have different sizes. If a source simply says gallons, check the country or measurement standard before using the result.

For the US liquid gallon, 3.785411784 liters make one gallon. For an imperial gallon, the value is about 4.54609 liters. This difference can become significant for larger quantities.

Quick Conversion Reference

Liters	US Gallons
1	0.26417
5	1.32086
10	2.64172
20	5.28344
50	13.20860

Frequently Asked Questions

How many liters are in a US gallon?

One US liquid gallon is exactly 3.785411784 liters.

Is an imperial gallon the same size?

No. An imperial gallon is approximately 4.54609 liters.

Which gallon should I use?

Use the standard specified by the source, country, or application.

Related Conversion Guides

• Gallons to Liters: Formula, Examples, and Easy Guide
• ML to Cups: Formula, Examples, and Cooking Conversion Guide

Volume Conversion Depends on the Standard

Unlike liters, the word gallon does not identify a single universal volume. This is why a reliable converter needs to know whether the input refers to US or imperial gallons. The difference may be easy to overlook with a small quantity but becomes substantial for fuel, storage containers, or large-volume calculations. If a product label or specification gives a regional standard, use that information rather than choosing a gallon type based only on the word itself.