Volume Converter
Convert litres, millilitres, gallons, and cups.
Volume units, converted
Volume mixes metric and imperial, and the two gallons differ: a US gallon is 3.785 litres, an imperial gallon 4.546. This converts between litres, millilitres, gallons, quarts, and cups.
It resolves the recipe and fuel headaches where a US gallon (3.785 L) and an imperial gallon (4.546 L) share a name, or a recipe mixes cups with millilitres.
US vs imperial
Recipes and fuel figures depend on which gallon is meant, a frequent source of error. The math runs locally in your browser. The math runs on your device with nothing uploaded.
Frequently Asked Questions
How does the volume converter work?
The tool converts everything through liters, then scales to the chosen target. Three US gallons is 11.3562 liters using the US liquid gallon.
When should I use this converter?
Useful for cooking, aquarium sizing, packaging, fuel estimates, and converting US liquid measures to metric documentation.
What is the main limitation?
This uses US liquid units, not imperial UK gallons or dry-volume units.
Is this converter private?
Yes. The conversion runs entirely in your browser, so your values are not uploaded, stored, or sent to a server.
More free browser utilities for conversion, formatting, and technical cleanup.