Cups to ML Converter
Convert US cups to millilitres — one US cup is 236.6 ml. Results update as you type; exact factors shown.
One US cup is 236.5882 millilitres — see the exact factor, not a rounded rule of thumb.
How the cups to ml converter works
Volumes convert through the litre (exactly 1 dm³). The US gallon is exactly 3.785411784 L (231 cubic inches); the imperial gallon is exactly 4.54609 L. A US fluid ounce is 29.5735 mL, an imperial fluid ounce 28.4131 mL; a US pint is 16 US fl oz, an imperial pint 20 imperial fl oz.
The UK is metric for most trade and science but keeps miles, pints, stone and mpg (with the imperial gallon) in daily life.
Common volume conversions
| From | To | Units |
|---|---|---|
| 0.25 US cup | 59.1471 mL | US cups to millilitres |
| 0.33 US cup | 78.0741 mL | US cups to millilitres |
| 0.5 US cup | 118.2941 mL | US cups to millilitres |
| 0.67 US cup | 158.5141 mL | US cups to millilitres |
| 0.75 US cup | 177.4412 mL | US cups to millilitres |
| 1 US cup | 236.5882 mL | US cup to millilitres |
| 1.5 US cup | 354.8824 mL | US cups to millilitres |
| 2 US cup | 473.1765 mL | US cups to millilitres |
| 3 US cup | 709.7647 mL | US cups to millilitres |
| 4 US cup | 946.3529 mL | US cups to millilitres |
| 6 US cup | 1,419.5294 mL | US cups to millilitres |
| 8 US cup | 1,892.7059 mL | US cups to millilitres |
Units in this converter and their exact factors
| Unit | Symbol | One unit in litres |
|---|---|---|
| millilitre | mL | 0.001 litre |
| litre | L | 1 litre |
| cubic metre | m³ | 1,000 litre |
| teaspoon (metric) | tsp | 0.005 litre |
| tablespoon (metric) | tbsp | 0.015 litre |
| cup (metric) | cup | 0.25 litre |
| US fluid ounce | US fl oz | 0.0295735296 litre |
| US cup | US cup | 0.2365882365 litre |
| US pint | US pt | 0.473176473 litre |
| US gallon | US gal | 3.785411784 litre |
| imperial fluid ounce | imp fl oz | 0.0284130625 litre |
| imperial pint | imp pt | 0.56826125 litre |
| imperial gallon | imp gal | 4.54609 litre |
| cubic foot | ft³ | 28.316846592 litre |
FAQFrequently asked questions about volume conversion
How many ml in a US cup?
236.588 ml.
Is a metric cup the same?
No — Australia and much of Europe use a 250 ml cup, and the UK often uses 284 ml. This page uses the US cup.
How many cups in a litre?
4.23 US cups.
Why do my baking results differ?
Because a cup measures volume, and how tightly flour is packed changes its weight by up to 20%. Weighing is more reliable.
What is half a cup in ml?
118.3 ml.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Physical Laboratory (NPL) — United Kingdom's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.