A common recipe conversion between the metric milliliter and the US customary cup.
How it works
Dividing milliliters by 236.5882365 gives cups; multiplying cups by that same constant gives milliliters back. Type into either field and the other updates instantly.
What this does not include
This does not include the UK/metric cup, sometimes rounded to 250 mL, distinct from the US customary cup used here.
How to use this calculator
- Enter a value in either milliliters or cups — the other field fills in automatically.
Frequently asked questions
Why isn’t a cup a round number of milliliters?
Because the US cup is defined as exactly 8 US fluid ounces within the US customary gallon system, not designed to align neatly with the metric milliliter.
Where is this conversion most often needed?
Recipe conversion between US-volume and metric-volume sources, a very common source of confusion in international cooking.
Is a “metric cup” different from this?
Yes — some countries define a metric cup as exactly 250 mL, distinct from the US customary cup’s 236.59 mL used in this calculator.
