Cups to ml●
Cups in. Millilitres out. Convert American recipes in a moment.
Volume
Use a decimal point, for example 2.54. Scientific notation works too: 1e3.
Try a value
Pick an example to startThe formula
millilitres = us cups (customary) × 236.5882365
Multiply the number of us cups (customary) by 236.5882365 to get millilitres. To go the other way, divide by the same number.
A worked example
For 1 US cup, multiply 1 by 236.5882365. The result is approximately 236.588236 mL.
1 × 236.5882365 ≈ 236.588236 mL
Quick reference
Reference values are rounded to 6 decimal places. Use the converter above for other values or precision.
| US cups (customary) (US cup) | Millilitres (mL) |
|---|---|
| 0.125 | 29.57353 |
| 0.25 | 59.147059 |
| 0.333 | 78.783883 |
| 0.5 | 118.294118 |
| 0.75 | 177.441177 |
| 1 | 236.588237 |
| 1.5 | 354.882355 |
| 2 | 473.176473 |
| 4 | 946.352946 |
All equivalent units
The same value, in every supported unit.
Volume conversions
For American recipes.
Use this conversion for US recipes. One US cup is 236.5882365 millilitres, which many cooks round to 240 ml. A metric cup is 250 ml, so a recipe from Australia or Canada may differ. Choose Metric cup in the menu to compare.
Calculation details & precision
Volume conversions use litres as the base unit. One litre is 1,000 mL or 0.001 m³. A US liquid gallon is exactly 3.785411784 L; a UK Imperial gallon is exactly 4.54609 L. The US customary cup is 1/16 of a US liquid gallon; the metric cup here is 250 mL.
Automatic displays up to 12 significant digits. Choose 2, 4 or 6 decimal places in Precision for a shorter result. Displayed results are rounded; very large or small values use scientific notation.
Common questions
Is a cup 240 or 250 ml?
A US cup is 236.588 ml, usually rounded to 240 ml. A metric cup is exactly 250 ml.
How many millilitres are in 1 us cups (customary)?
1 US cup is approximately 236.588236 mL. The converter can show more significant digits or round to a chosen number of decimal places.