Convert US cups to milliliters

Enter a value in US cups to convert it to milliliters.

=milliliters

US cups to milliliters reference

US cupsmilliliters
1 cup240 ml
2 cup480 ml
5 cup1200 ml
10 cup2400 ml
25 cup6000 ml
50 cup12000 ml
100 cup24000 ml

The conversion factor

One US cup is 240 milliliters. So to convert, multiply your figure in US cups by 240. To go the other way, multiply milliliters by 0.00416667, or use the milliliters to US cups converter.

Doing it in your head

For a quick estimate, round the factor: roughly "times 240". Use the exact converter above when the number matters.

Where this conversion comes up

Cooking and baking (especially US vs metric recipes), fuel, and container sizes.

See the common unit conversions cheat sheet for the factors worth memorising.

Related tools

milliliters to US cupsliters to US gallonsUS gallons to litersmilliliters to US fluid ouncesUS fluid ounces to millilitersliters to millilitersmilliliters to liters

Frequently asked questions

How many milliliters are in a US cup?
1 US cup = 240 milliliters.
What is the formula to convert US cups to milliliters?
Multiply the number of US cups by 240. To go back the other way, multiply milliliters by 0.00416667.
What is 10 US cups in milliliters?
10 US cups = 2400 milliliters. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.

Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.