Cups to ML Converter
Convert US cups to milliliters — one US cup is 236.6 ml. Results update as you type; exact factors shown.
One US cup is 236.5882 milliliters — see the exact factor, not a rounded rule of thumb.
How the cups to ml converter works
Volumes convert through the liter (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 US uses customary units (US gallon, short ton, °F) in daily life; NIST SP 811 gives the exact SI factors.
Common volume conversions
| From | To | Units |
|---|---|---|
| 0.25 US cup | 59.1471 mL | US cups to milliliters |
| 0.33 US cup | 78.0741 mL | US cups to milliliters |
| 0.5 US cup | 118.2941 mL | US cups to milliliters |
| 0.67 US cup | 158.5141 mL | US cups to milliliters |
| 0.75 US cup | 177.4412 mL | US cups to milliliters |
| 1 US cup | 236.5882 mL | US cup to milliliters |
| 1.5 US cup | 354.8824 mL | US cups to milliliters |
| 2 US cup | 473.1765 mL | US cups to milliliters |
| 3 US cup | 709.7647 mL | US cups to milliliters |
| 4 US cup | 946.3529 mL | US cups to milliliters |
| 6 US cup | 1,419.5294 mL | US cups to milliliters |
| 8 US cup | 1,892.7059 mL | US cups to milliliters |
Units in this converter and their exact factors
| Unit | Symbol | One unit in liters |
|---|---|---|
| milliliter | mL | 0.001 liter |
| liter | L | 1 liter |
| cubic meter | m³ | 1,000 liter |
| teaspoon (metric) | tsp | 0.005 liter |
| tablespoon (metric) | tbsp | 0.015 liter |
| cup (metric) | cup | 0.25 liter |
| US fluid ounce | US fl oz | 0.0295735296 liter |
| US cup | US cup | 0.2365882365 liter |
| US pint | US pt | 0.473176473 liter |
| US gallon | US gal | 3.785411784 liter |
| imperial fluid ounce | imp fl oz | 0.0284130625 liter |
| imperial pint | imp pt | 0.56826125 liter |
| imperial gallon | imp gal | 4.54609 liter |
| cubic foot | ft³ | 28.316846592 liter |
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 liter?
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 Institute of Standards and Technology (NIST) — United States's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.