🥄 Cooking measures
mL to Cups Converter
Enter millilitres and press Convert to get cups. A US cup is 236.6 mL, so 500 mL is 2.11 US cups.
About the mL to Cups Converter
This is the conversion metric-country cooks need for American recipes, and the answer depends on which cup you mean: 236.6 mL (US), 250 mL (metric), 227 mL (UK) or 200 mL (Japan). Choosing the wrong one is a 5-25% error.
For most cooking the difference is tolerable; for baking it is not. A cake recipe scaled with a 200 mL cup instead of a 236.6 mL one is short by 15% of its liquid, which is enough to change the texture.
How the calculation works
- 1 US cup = 236.588 mL
- 1 metric cup = 250 mL · 1 UK cup = 227.3 mL
- Cups = millilitres ÷ 236.588
Reference values
| Millilitres | US cups | Metric cups |
|---|---|---|
| 50 mL | 0.21 cup | 0.20 cup |
| 100 mL | 0.42 cup | 0.40 cup |
| 240 mL | 1.01 cup | 0.96 cup |
| 250 mL | 1.06 cup | 1.00 cup |
| 500 mL | 2.11 cups | 2.00 cups |
| 1,000 mL | 4.23 cups | 4.00 cups |
Worked examples
- 1 Millilitre = 0.00422675 Cup (US).
- 2 Millilitre = 0.00845351 Cup (US).
- 5 Millilitre = 0.0211338 Cup (US).
- 10 Millilitre = 0.0422675 Cup (US).
- 50 Millilitre = 0.211338 Cup (US).
- 100 Millilitre = 0.422675 Cup (US).
Checking the answer
Multiply the Millilitre figure by 0.00422675 to get Cup (US), and divide by the same number to come back. Twenty-five Millilitre should land at 0.105669 Cup (US); an answer near 5,914.71 means the division went the wrong way. A quick sanity check is that Cup (US) 0.0422675 must always be smaller than the matching Millilitre figure when the factor is above 1.
Common mistakes
- Using a coffee mug as a cup measure.
- Packing brown sugar when the recipe expects it loose.
- Mixing US, metric and UK cup sizes in one recipe.
Using this conversion
The Millilitre to Cup (US) relationship is fixed, so one factor covers every value you will enter: a household quantity and an industrial one behave identically. What changes with size is only how much the rounding matters, which is why the table above stops at a round number rather than at whatever figure you happen to need today.
When precision matters
For a rough Millilitre to Cup (US) estimate one decimal place is plenty. For a contract, a shipping document or a lab result, keep the full figure from the converter and round only on the final line, so no intermediate step throws the Cup (US) total out.
A last check on the numbers: 37 Millilitre works out to 0.15639 Cup (US), and reversing that with the same factor brings you back to 37 Millilitre. Because Millilitre to Cup (US) is a single multiplication, any tool that gives a different figure for the same input is rounding somewhere in the middle rather than only at the end.