Volume & liquid conversions

Convert liters, gallons, and cups. US and UK gallons differ—use our country guide when labels look confusing.

Volume tools

Start with the pair you need; for recipe culture swaps, open cooking units by country.

Other hubs

Weight · Cooking by country · Metric

Frequently asked questions

No. A US gallon is about 3.785 L; an imperial (UK) gallon is about 4.546 L. Always check which gallon a source means.
There are 16 US cups in one US gallon when using the standard 240 mL cup. See our cups in a gallon page for detail.
Use liters and gallons together with distance units; the travel hub includes L/100 km and US mpg shortcuts.