Unit converter — Volume
Milliliters to US cups converter
Convert milliliters (mL) to US cups (cup). Source-cited conversion factor, exact to the displayed precision.
Results are mathematically exact for the displayed precision. How we calculate.
Convert milliliters to US cups— the formula
Milliliters convert to US cups by multiplying by the published conversion factor. The factor below is exact to the precision shown, sourced from the citation under the formula.
cup = mL × 0.004227
mL = cup × 236.59
Metric volumes per BIPM SI definitions. US customary volumes per NIST Handbook 44: 1 US gal = 3.785411784 L exactly; 1 fl oz = 1/128 US gal.
Frequently asked questions
How many US cups are in a milliliter?
1 mL = 0.004227 cup. To convert any amount, multiply by 0.004227.How do you convert milliliters to US cups?
Multiply the number of milliliters by 0.004227 to get US cups. The formula is shown in the "How it's calculated" section above.Where does the conversion factor come from?
It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.