Convert US cups to millilitres in one step. Type a value, change the units if you need a different pair, and the answer updates as you type, with the reverse rate and a quick reference list.
Results are estimates for planning. Check the figures before you make a financial or health decision.
How to convert US cups to millilitres
Multiply the number of cup by 236.588236 to get ml:
ml = cup × 236.588236
To go the other way, divide by 236.588236 (or multiply by 0.004227). The converter stores each unit as a multiple of a base unit, so you can also pick any other pair of units from the same group.
Worked example
Using the default values in the converter above:
| Input | Value |
|---|---|
| Value | 1 |
| From | US cups |
| To | Millilitres |
1 US cups equals 236.588236 millilitres
Cups to ML reference table
| US cups | Millilitres |
|---|---|
| 1 cup | 236.588236 ml |
| 2 cup | 473.176473 ml |
| 5 cup | 1,182.941182 ml |
| 10 cup | 2,365.882365 ml |
| 20 cup | 4,731.76473 ml |
| 50 cup | 11,829.41182 ml |
| 100 cup | 23,658.82365 ml |
| 250 cup | 59,147.05912 ml |
| 500 cup | 118,294.1182 ml |
Tips and common mistakes
Volume is where UK and US units part company. A UK pint is 568.26 ml but a US pint is 473.18 ml, a UK gallon is 4.54609 litres while a US gallon is 3.785 litres, and a UK fluid ounce (28.41 ml) is slightly smaller than a US one (29.57 ml). Always pick the unit that matches the source of your figure.
Cup sizes also vary. The US cup used here is 236.59 ml, while a metric cup used in UK and Australian recipes is usually 250 ml. When a recipe does not say which, a difference of a few per cent rarely matters for cooking, but it does matter for baking.
For ingredients by weight, such as cups of flour to grams, use the Cooking conversions calculator, since a cup of flour and a cup of sugar do not weigh the same.
Frequently asked questions
How many millilitres are in 1 cup?
1 cup equals 236.588236 millilitres.
How do I convert cup to ml by hand?
Multiply the cup figure by 236.588236. For example, 1 cup × 236.588236 = 236.588236 ml.
How do I convert ml back to cup?
Divide the ml figure by 236.588236, or multiply it by 0.004227. For example, 236.588236 ml is 1 cup.
Is this conversion exact?
Yes for the definitions used here, but UK and US units differ, so check you have the right one for your source.