Cups to Milliliters Converter

About the cup to ml calculation

One cup is exactly 236.588 milliliters, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The US legal cup is 240 ml; the customary cup used in recipes is 236.6 ml. The everyday unit for drinks, medicine doses and recipe liquids.

Formula

ml = cup × 236.588

1 cup = 236.588 ml
1 ml = 0.00422675 cup

Worked example

To convert 1 cup, multiply by 236.588: 1 × 236.588 = 236.588 ml.

Frequently asked questions

How many milliliters are in a cup?

There are 236.588 milliliters in one cup. To convert any amount, multiply the number of cups by 236.588.

How do I convert milliliters back to cups?

Divide instead of multiplying, or equivalently multiply by 0.00422675. One milliliter is 0.00422675 cups.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between cups and milliliters is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Cups: the US legal cup is 240 ml; the customary cup used in recipes is 236.6 ml. Milliliters: the everyday unit for drinks, medicine doses and recipe liquids.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units