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How do I convert cups to milliliters?

Short answer

Multiply the number of US cups by 236.588, so one US cup is about 237 ml and two cups are about 473 ml. Note that a metric cup used in Australia and New Zealand is 250 ml. A free converter switches between cups and milliliters instantly.

Three different cups, three different numbers

The US customary cup is 236.588 ml. US nutrition labels use a rounded legal cup of 240 ml. Australia and New Zealand use a 250 ml metric cup. For most cooking the differences are small, but in baking, where ratios matter, it pays to know which cup the recipe author meant and convert through milliliters.

Quick reference (US cups)

A quarter cup is about 59 ml, a half cup about 118 ml, one cup about 237 ml, and two cups about 473 ml. Going the other way, 500 ml is about 2.11 US cups. Typing either value into the converter gives the exact figure without kitchen math mid-recipe.

Frequently asked questions

How many milliliters is half a cup?

About 118 ml for a US cup, since 236.588 / 2 = 118.29.

Is a cup 250 ml?

The metric cup used in Australia and New Zealand is 250 ml. The US customary cup is 236.588 ml, and US nutrition labels round it to 240 ml.

How many cups is 500 ml?

About 2.11 US cups, from 500 / 236.588.

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