Cup (water-equivalent) to Millilitre of Water

Free instant cup (water-equivalent) to millilitre of water converter. 1 cup = 236.588 mL.

236.588
Formula
1 cup = 236.588 mL

Common Cup (water-equivalent) to Millilitre of Water values

Common Cup (water-equivalent) to Millilitre of Water conversion values.
Cup (water-equivalent) (cup)Millilitre of Water (mL)
1236.588
51182.94
102365.88
255914.71
5011829.4
10023658.8
500118294
1000236588

How does Cup (water-equivalent) to Millilitre of Water conversion work?

Type a value in the Cup (water-equivalent) (cup) field and the equivalent in Millilitre of Water (mL) appears instantly to the right. The math uses the exact formula shown above โ€” no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.

Cup (water-equivalent). 1 US legal cup = 236.588 mL = 8 fl oz. Equivalent grams assume water density โ€” use the ingredient-specific cup entry for flour, sugar, etc.

Millilitre of Water. For water, 1 millilitre weighs exactly 1 gram (the definition of the gram). True at standard pressure and 4ยฐC.

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No submit button โ€” the result updates as you type. Math runs entirely in your browser, so itโ€™s as fast as your device.

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Works in any modern browser โ€” Mac, Windows, Linux, iPhone, Android, tablets. No installation, no signup.

๐ŸŽฏ Accurate conversions

Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.

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Frequently asked

What is the formula for converting Cup (water-equivalent) to Millilitre of Water?+
The formula is: 1 cup = 236.588 mL. Type any value into the calculator above and the result appears instantly.
How do I convert Millilitre of Water back to Cup (water-equivalent)?+
Click the swap button (โ‡„) above to go to the Millilitre of Water โ†’ Cup (water-equivalent) converter, or use the inverse formula derived from the one shown.
How accurate is the conversion?+
Conversion factors used here are exact rational values from NIST SP 811 and the BIPM SI brochure (e.g. 1 ft = 0.3048 m exactly, 1 lb = 0.45359237 kg exactly). Trailing-digit differences vs hand calculation come only from binary floating-point representation, never from the conversion factor itself.
Where do these conversion factors come from?+
Length and mass factors come from the 1959 international yard-and-pound agreement; SI base units (metre, kilogram, second, kelvin) come from the 2019 BIPM redefinition; energy and pressure factors are NIST SP 811 reference values. Each editorial section above lists the specific source for that category.
Can I copy the conversion factor for use elsewhere?+
Yes. The factor in the formula above is the exact rational value used internally; copying it into Excel or another tool reproduces the result to floating-point precision.

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