Cups (US) to Millilitres Converter (cup to ml)
Convert cups (us) to millilitres instantly. 1 cup = 236.59 ml. Includes the formula, a full conversion table and a calculator that works offline.
The formula
To convert cups (us) to millilitres, multiply by 236.59:
ml = cup × 236.59Going the other way, divide instead — or multiply by 0.004227, which is the same thing:
cup = ml × 0.004227Cups (US) to Millilitres conversion table
| Cups (US) | Millilitres |
|---|---|
| 1 cup | 236.59 ml |
| 2 cup | 473.18 ml |
| 3 cup | 709.76 ml |
| 4 cup | 946.35 ml |
| 5 cup | 1,182.94 ml |
| 6 cup | 1,419.53 ml |
| 7 cup | 1,656.12 ml |
| 8 cup | 1,892.71 ml |
| 9 cup | 2,129.29 ml |
| 10 cup | 2,365.88 ml |
| 15 cup | 3,548.82 ml |
| 20 cup | 4,731.76 ml |
| 25 cup | 5,914.71 ml |
| 30 cup | 7,097.65 ml |
| 40 cup | 9,463.53 ml |
| 50 cup | 11,829.41 ml |
| 75 cup | 17,744.12 ml |
| 100 cup | 23,658.82 ml |
| 250 cup | 59,147.06 ml |
| 500 cup | 118,294.12 ml |
| 1000 cup | 236,588.24 ml |
Millilitres to Cups (US)
| Millilitres | Cups (US) |
|---|---|
| 1 ml | 0.004227 cup |
| 2 ml | 0.008454 cup |
| 3 ml | 0.0127 cup |
| 4 ml | 0.0169 cup |
| 5 ml | 0.0211 cup |
| 6 ml | 0.0254 cup |
| 7 ml | 0.0296 cup |
| 8 ml | 0.0338 cup |
| 9 ml | 0.038 cup |
| 10 ml | 0.0423 cup |
What that actually looks like
A conversion factor is hard to judge on its own. These are quantities most people already have a feel for, converted for you:
- A cup of flour in a recipe — 236.59 ml
- A large mug of coffee is about 1.5 cups — 354.88 ml
Why both units are still in use
Volume has a hidden complication: the US and imperial systems use the same words for different amounts. A US gallon is 3.785 litres, while an imperial gallon is 4.546 litres — about 20 percent larger. The same is true of pints and fluid ounces. This page uses US measures, which is what recipes and fuel prices mean unless they say otherwise.
Mistakes worth avoiding
Check whether a recipe is American or British before converting. A US cup is 237 ml and an imperial cup is 284 ml, which is enough of a difference to ruin baking. If a recipe lists ounces for a solid ingredient it means weight, not fluid ounces.
The other habit worth breaking is rounding too early. Convert first, round once at the end, and you avoid the drift that turns a small approximation into a visible error by the third calculation.
Doing it in your head
When you only need a rough answer, round the factor to 240 and multiply. That runs a little high by about 1.4 percent, which is fine for a quick estimate: ten cups (US) comes out at 2,400 rather than the exact 2,365.88 millilitres. An estimate is enough for deciding whether something will fit or whether a figure sounds plausible. When the number has to be right — because you are buying, cooking or building to it — use the calculator and let it carry the decimals.
Common questions
How many millilitres are in one US cup?
One US cup equals 236.59 millilitres. The calculator above handles any value, including decimals and very large numbers, and updates as you type.
Is this an exact conversion?
Yes — this is an exact defined ratio, not an approximation. The table rounds for readability; the calculator does not.
Does this work offline?
Yes. The conversion runs in your browser with no network request, so it works on a plane, in a basement, or on a phone with no signal once the page has loaded.