Cups to mL Converter
Convert US cups to milliliters instantly — 1 cup = 236.588 ml
1 cups =
236.59 ml
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Quick summary
To convert US cups to milliliters, multiply by 236.588. So ½ cup ≈ 118.29 ml, 1 cup ≈ 236.59 ml, and 2 cups ≈ 473.18 ml. To convert ml to cups, divide by 236.588. Use swap to reverse. Note the US cup differs from the metric cup (250 ml) and UK cup — check your recipe's origin.
Reviewed by Simple Calculators TeamLast reviewed
How to use this calculator
- Enter the inputs requested by the calculator.
- Choose the units or options that match your situation and review the assumptions.
- Run or update the calculation to see the result.
- Review the result, breakdown, and formulas shown on the page.
- Check the inputs, units, dates, and limitations before saving or sharing the result.
Frequently asked questions
How do I convert cups to ml?
Multiply the US cups by 236.588. For example, 2 cups × 236.588 = 473.18 ml. To convert ml to cups, divide by 236.588 instead.
How many ml in a cup?
A US cup is 236.588 ml (often rounded to 240 ml in nutrition labeling). A metric cup is exactly 250 ml, and a UK cup is about 284 ml, so recipes vary by origin.
What is 1/2 cup in ml?
Half a US cup is about 118.29 ml. The reference table lists common recipe fractions like ¼, ⅓, ½, and ¾ cup.
Are US and metric cups the same?
No — a US cup is 236.588 ml while a metric cup is exactly 250 ml (about 5% larger), and the UK cup differs again. For precise baking, use the cup standard your recipe was written in.
Key terms
- US Cup
- A US volume unit equal to 236.588 ml.
- Metric Cup
- A rounded 250 ml cup used in many countries.
- Milliliter (ml)
- A metric volume unit; 1000 ml = 1 liter.
Methodology, sources & limitations
This page shows the formula, assumptions, and limitations used for this estimate. Rates, thresholds, and other time-sensitive inputs can change, so verify them against the relevant official source before relying on a result.
For our review approach and the primary sources we consult, see the methodology and source policy. If you spot an outdated figure or formula, please contact us with a correction.