How it's calculated
cups = mL ÷ C
mL = millilitres, cups = number of cups, C = mL per cup for the chosen standard (US customary 236.59, US legal 240, metric 250, UK imperial 284.13).
Common values
| Milliliters | US legal cup (240 mL) | US customary (236.59 mL) | Metric cup (250 mL) |
|---|---|---|---|
| 100 | 0.42 | 0.42 | 0.40 |
| 240 | 1.00 | 1.01 | 0.96 |
| 250 | 1.04 | 1.06 | 1.00 |
| 500 | 2.08 | 2.11 | 2.00 |
Common questions
Which cup should I use for US recipes?
Most US recipes use the customary cup of about 236.59 mL, though nutrition labels use the rounded 240 mL legal cup.
How many mL is one cup?
It depends on the standard: 236.59 mL for the US customary cup, 240 mL for the US legal cup, and 250 mL for the metric cup.