Cups to ML Converter
Convert US cups to milliliters.
What would you like to do next?
Convert cups to milliliters
Recipes often mix US cups with metric milliliters, especially when adapting instructions from different regions. Enter a cup value and this tool returns the milliliter amount using the US customary cup. It is handy for baking, drinks, meal prep and ingredient substitutions where volume needs to be more precise.
Kitchen volume conversion
The calculator is bidirectional, so you can also type a milliliter amount and convert back to cups.
Which cup this converter uses
The conversion is based on the US customary cup, not an Imperial cup, metric cup, or a physical cup from a kitchen cupboard.
Method
Multiply US cups by 236.5882365 to obtain milliliters. Entering milliliters divides by the same factor.
milliliters = US cups x 236.5882365
Worked example
Two US cups equal 473.176473 milliliters, usually rounded to 473.18 mL for a recipe.
Limits
- A metric cup is commonly 250 mL, so check the origin of the recipe.
- Volume conversion does not convert an ingredient to grams; that requires its density.
- Kitchen measuring tools rarely justify all the decimal places in the conversion factor.
- NIST Guide to the SI, conversion factors: US volume conversion factors.
Reviewed against the current calculator or processor on September 6, 2026.
Frequently asked questions
Which cup size is used?
This tool uses the US cup, equal to about 236.588 ml.
Is it good for dry ingredients?
It converts volume. Weight conversions for dry ingredients depend on ingredient density.
Can I convert milliliters back to cups?
Yes. Type in either field and the other side updates.