How to use Volume Converter
A gallon has different definitions in the US and imperial systems. Select the labelled unit that matches your source; substituting one for the other changes the result considerably. US fluid ounces are volume units, not ordinary ounces of mass.
The tool converts volume without using density. A litre of water and a litre of oil can have different masses, so it cannot convert litres into kilograms.
The formula
A worked example
Value to convert: 10 · From: Litres · To: US liquid gallons
Converted value: 2.641720524 US liquid gallons
US liquid and imperial gallons are separate; no density conversion.
Questions about this calculation
Why are there two gallons?
A US liquid gallon is about 3.785 litres; an imperial gallon is 4.54609 litres.
Can I convert litres to kilograms?
Only with a substance’s density. This tool converts volume units only.
Formula checks: 2026-10-08. Assumptions & corrections.