Gallons to Liters Converter

Convert US liquid gallons to liters and liters to US gallons with this free online converter.

Enter volume in US gallons

Enter volume in liters

How it works

Convert between US liquid gallons and liters. Enter either quantity; the other is computed using the standard US gallon definition.

The Formula
1 US liquid gallon = 3.785411784 liters
Worked Example
  1. Example conversion

    1 US gallon ≈ 3.7854 liters. Five gallons ≈ 18.927 liters.

Tips, Assumptions & Limitations
  • UK (imperial) gallons are larger (~4.546 L). This tool uses US liquid gallons only.
FAQ

Enter a value in either field and click Convert. The tool converts US liquid gallons and liters in both directions.

1 US liquid gallon equals 3.785411784 liters (NIST). This page uses US gallons, not UK (imperial) gallons.

Related guide

Volume converter: gallons, liters, and milliliters

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