How to convert US cups to millilitres
One US cup equals 236.588 millilitres, so multiply the number of US cups by 236.588:
ml = cup × 236.588
cup = ml ÷ 236.588 (1 ml = 0.004227 cup)
Example: 0.25 cup → 0.25 × 236.588 = 59.1471 ml.
Going the other way, divide by 236.588, or multiply by 0.004227; the millilitres to US cups converter does it for you.
Everyday values
| US cups | Millilitres | For example |
|---|---|---|
| 0.25 cup | 59.1471 ml | 1/4 cup |
| 0.333 cup | 78.7839 ml | 1/3 cup |
| 0.5 cup | 118.294 ml | 1/2 cup |
| 0.75 cup | 177.441 ml | 3/4 cup |
| 1 cup | 236.588 ml | 1 cup |
| 2 cup | 473.176 ml | 2 cups (one US pint) |
When you need this conversion
US recipes measure many ingredients in cups. One US customary cup is 236.6 ml, but US nutrition labels use a rounded "legal cup" of 240 ml, and the metric cup used in Australia and elsewhere is 250 ml. For liquids the difference is small; for baking, weighing in grams is more reliable than any cup.
US cup to millilitre conversion table
| cup | ml | cup | ml |
|---|---|---|---|
| 0.25 cup | 59.1471 ml | 2.25 cup | 532.324 ml |
| 0.5 cup | 118.294 ml | 2.5 cup | 591.471 ml |
| 0.75 cup | 177.441 ml | 2.75 cup | 650.618 ml |
| 1 cup | 236.588 ml | 3 cup | 709.765 ml |
| 1.25 cup | 295.735 ml | 3.25 cup | 768.912 ml |
| 1.5 cup | 354.882 ml | 3.5 cup | 828.059 ml |
| 1.75 cup | 414.029 ml | 3.75 cup | 887.206 ml |
| 2 cup | 473.176 ml | 4 cup | 946.353 ml |
About the units
- US cup (cup): 8 US fluid ounces, about 236.6 millilitres (legal nutrition-label cup: 240 ml).
- Millilitre (ml): one thousandth of a litre, the same as one cubic centimetre.
Both are units of volume. The conversion factor comes from the exact definitions above, so the calculator is exact; results are only rounded for display (up to six significant digits).
Frequently asked questions
How many millilitres are in one US cup?
One US cup is 236.588 millilitres. One millilitre is 0.004227 US cups.
How do I convert US cups to millilitres?
Multiply the value in US cups by 236.588. To go back, divide by 236.588.
What is 0.25 cup in millilitres?
0.25 cup = 59.1471 ml.
What is 0.333 cup in millilitres?
0.333 cup = 78.7839 ml.
Sources
- NIST Special Publication 811 (2008), Guide for the Use of the International System of Units (SI), Appendix B: conversion factors.
- NIST Handbook 44 (2024), Appendix C: General tables of units of measurement.
Last reviewed 5 October 2026. Results are estimates; see our disclaimer.