Cups to Milliliters Converter

Conversion Updated 15 Jun 2026

This Cups to Milliliters Converter lets you convert US cups (cup) into Milliliters (mL) in one step. Enter a value in us cups and you'll instantly see the equivalent in milliliters, worked out with the formula milliliters = cups x 236.5882365. It's handy whenever you need a quick, precise us cups-to-milliliters conversion without doing the arithmetic by hand.

  • Conversion constants are fixed and do not vary by region.

Formula

milliliters = cups x 236.5882365
  • To convert us cups to milliliters, multiply your value by the fixed factor 236.5882365 (so 1 cup = 236.5882365 mL).
  • The factor comes from the internationally agreed definitions of each unit, so it never changes.
  • Displayed results are rounded for readability, but the full-precision value is used in the calculation.

Example

Inputs
  • US cups (cup): 2

Start with 2 cup. Multiply by 236.5882365 to get 473.176473 mL.

Frequently asked questions

How do I convert us cups to milliliters?
Multiply the number of us cups by 236.5882365. For example, 2 cup equals 473.176473 mL.
Are these conversion factors accurate?
Yes. The calculator uses internationally accepted definitions for each unit, so the conversion factor is exact.
Why can tiny differences appear after conversion?
Very small differences are only a display effect from rounding the output. The underlying calculation keeps full precision.