mL to Cups Converter

A U.S. cup is about 236.6 mL, while the metric cup used in Australia, Canada and New Zealand is exactly 250 mL. Recipes from different countries can therefore differ by about 6% per cup.

How to use the mL to Cups Converter

1. Type the number of millilitres into the Millilitres field. Decimals such as 125 are fine.
2. Read the answer in US cups – it updates as you type, with no button to press.
3. To convert the other way, type into US cups and the millilitres are recalculated.
4. Press Copy results to copy both values with the page title, or Copy link to share this exact conversion.

This page converts only mL ⇄ US cup. Need a different unit? Use the general volume converter, where you can choose any “from” and “to” unit.

How it works

Both units measure volume, so they are always in the same ratio: one millilitre equals 0.0042267528 US cups. The calculator multiplies the number of millilitres you type by 0.0042267528 to give US cups, and when you type into the US cups field it divides by the same factor to give millilitres. Because the ratio never changes, doubling the millilitres always doubles the US cups. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation).

How to convert millilitres to US cups

1. Write down the value in millilitres, for example 250 mL.
2. Multiply by the conversion factor 0.0042267528 (because 1 millilitre = 0.0042267528 US cup).
3. 250 × 0.0042267528 = 1.0566882 US cup.
4. To go back from US cups to millilitres, divide by 0.0042267528 – or multiply by 236.58824.

mL to US cup conversion table

What is a millilitre?

A millilitre is one thousandth of a litre and exactly one cubic centimetre. Medicines, cosmetics, drinks and kitchen measures are labelled in mL.

What is a US cup?

The U.S. customary cup is 8 U.S. fluid ounces, about 236.6 mL. Recipes from Australia, Canada and New Zealand often use the 250 mL metric cup instead.

Quick mental conversion

For a fast estimate, multiply millilitres by about 0.0042 to get US cups; the error is about 0.6%. Use the calculator above when you need the exact figure.

Common mistakes to avoid

Mixing u.s. and uk gallons, pints and fluid ounces, assuming a cup is always 250 ml, and treating volume and weight as interchangeable for anything except water.