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Liters to Gallons Converter

Easily convert any amount from liters to US gallons or Imperial (UK) gallons. This tool is perfect for understanding fuel economy, recipe conversions, or comparing liquid volumes across different measurement systems.

Enter the amount in liters you want to convert.

Choose whether to convert to US Gallons or Imperial Gallons.

How it works

Easily convert any amount from liters to US gallons or Imperial (UK) gallons. This tool is perfect for understanding fuel economy, recipe conversions, or comparing liquid volumes across different measurement systems.

The Formula
1 US Liquid Gallon = 3.78541 Liters
1 Imperial Gallon = 4.54609 Liters To convert Liters to Gallons:
Gallons = Liters / Conversion Factor
Worked Example
  1. Converting 20 Liters

    Let's say you have 20 liters of fuel and want to know how many US gallons that is. You would input '20' into the Liters field and select 'US Gallons'. The calculator will divide 20 by 3.78541, giving you approximately 5.2834 US gallons. If you needed Imperial gallons, it would divide 20 by 4.54609, resulting in about 4.4005 Imperial gallons.

Tips, Assumptions & Limitations
  • Remember that US gallons and Imperial gallons are different sizes!
  • Use this converter for cooking, vehicle fuel, or any liquid volume comparison.
  • For quick estimates, you can approximate 1 US gallon as 3.8 liters and 1 Imperial gallon as 4.5 liters.
FAQ

The main difference is their volume. A US liquid gallon is defined as 231 cubic inches, which is approximately 3.785 liters. An Imperial (or UK) gallon is larger, defined as 4.546 liters. This difference is important for fuel measurements and international recipes.

There are exactly 3.78541 liters in one US liquid gallon. This is a standard conversion factor used in the United States for various applications, including fuel and beverages.

One Imperial gallon contains approximately 4.54609 liters. This unit is primarily used in the United Kingdom and some Commonwealth countries.

While this specific tool converts liters to gallons, you can easily reverse the process by multiplying the number of gallons by the appropriate conversion factor (3.78541 for US gallons or 4.54609 for Imperial gallons) to get liters. We also have a general volume converter that handles many unit types.

Companion article

Liters to Gallons Converter: US vs. Imperial Gallons Explained

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