Volume Converter
Convert between metric and US volume units. e.g. “How many cups is 500 ml?”
Enter your values
Results update as you type. All calculation happens in your browser.
Methodology
Convert between metric and US volume units. This tool uses a standard, documented formula and runs entirely on your device.
Last reviewed January 2026 · Runs client-side
Converting between volume units
Volume conversions turn up constantly in cooking and travel, where metric millilitres and litres meet US cups, pints, and gallons. This tool converts between them, routing each value through millilitres as a common base.
Because US and imperial measures of the same name can differ, the calculator uses US customary units throughout so the results stay consistent.
How to use this calculator
- Enter the value you want to convert.
- Choose the unit to convert from.
- Choose the unit to convert to and read the result.
What the inputs mean
- From and to units
- Metric millilitres and litres, or US teaspoons, cups, pints, quarts, and gallons.
500 millilitres is about 2.1 US cups, since a US cup is roughly 237 millilitres.
The formula, in plain terms
The value is converted into millilitres using the from-unit, then out of millilitres using the to-unit.
Frequently asked questions
Are these US or imperial units?
US customary. A US cup, pint, and gallon are smaller than their imperial namesakes, so confirm which a recipe means.
Can I convert cooking measures?
Yes, teaspoons, tablespoons, and cups are all supported for everyday recipe conversions.
Last reviewed January 2026. This explainer is general information, not professional advice.