US Gallons to Litres Converter

Find the litre equivalent of a volume stated in US liquid gallons. Check the gallon type before using a number from a container or specification.

How to use US Gallons to Litres Converter

1. Enter US Gallons. 2. Convert the stated measurement using its documented unit definition, with explicit rounding and supported input/output range. 3. Select Convert or press Enter from a single-line field. In multiline text fields, Enter inserts a line break. 4. Select Copy result to copy the answer, or Reset to clear the form and result.

Why use this tool?

Use US Gallons to Litres Converter when you need litres. Convert the stated measurement using its documented unit definition, with explicit rounding and supported input/output range.

How the calculation works

Litres = US liquid gallons × 3.785411784. The US liquid gallon is exactly 231 cubic inches. With 2.54 cm per inch, this is exactly 3.785411784 litres. Convert the stated measurement using its documented unit definition, with explicit rounding and supported input/output range.

Example

Worked example: US Gallons = 1. Result: 3.785412 L.

Practical tip

This is a unit conversion, not a temperature-compensated fuel-volume calculation. It does not adjust a measured liquid for expansion or contraction.