Volume Converter

Convert metric volume and clearly labeled US customary and Imperial measures for liquids and capacity.

How volume converter works

Values are normalized through liters. One US gallon is exactly 3.785411784 liters; one Imperial gallon is exactly 4.54609 liters.

Example formula: US gallons × 3.785411784 = liters

Accurate, private conversion

The conversion engine uses standardized constants and keeps calculation precision separate from display formatting. Your entered values stay in this browser and are not added to the URL or sent to the server.

Frequently asked questions

Are US and Imperial gallons equal?

No. An Imperial gallon is larger: 4.54609 liters versus 3.785411784 liters for a US gallon.

Is one milliliter equal to one cubic centimeter?

Yes. They represent exactly the same volume.