Tool
Gallons to Liters Converter
Convert US gallons to liters for metric liquid volume.
Unit Converters
What this tool does
Convert US liquid gallons to metric liters.
How to use
- Enter the volume in US gallons.
- View the liters result instantly.
- Use the reverse converter link for liters to gallons.
Formula
liters = US gallons × 3.785411784
Examples
5 US gallons
Input: 5
Output: 18.927059
5 × 3.785411784 ≈ 18.93 liters.
Learn more
US gallons to metric liters
One US liquid gallon equals approximately 3.78541 liters. Check whether your source uses US or imperial gallons before converting.
Common use cases
- Convert US fuel economy references to metric
- Translate recipe or chemical volumes
- Compare container sizes across standards
FAQ
Is this for US liquid gallons?
Yes. It uses the US liquid gallon definition of 3.785411784 liters.
How do I convert liters to gallons?
Use the Liters to Gallons converter.
Does this support fuel tank sizes?
Yes. Enter gallon capacity to get liters.
Source notes
- Conversion factor: 1 US liquid gallon = 3.785411784 liters.
Explore related workflows
Reverse conversion
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Last reviewed: 2026-05-23