How many milliliters are in 1 US cup?

Approximately 236.588 mL. This is the standard US customary cup used in American cooking.

Is this for US cups or metric cups?

This converter uses the US customary cup (236.588 mL). The metric cup used in Australia and Canada is 250 mL, which is slightly larger.

How do I convert 1/3 cup to mL?

One-third of a US cup is approximately 78.86 mL. You can type 0.333 in the cups field to get the exact result.

Does this work for liquid and dry ingredients?

Yes. The cup-to-mL conversion is purely a volume measurement and applies equally to liquids and dry ingredients measured by volume.

How accurate is the conversion?

Results are calculated using the exact factor of 236.588 mL per cup and displayed to two decimal places, which is more than sufficient for any cooking or baking purpose.

Is 1 cup 200 mL or 250 mL?

Neither for the US cup: it is 236.6 mL. The 250 mL cup is the metric standard used in Australia and Canada. A 200 mL "cup" is sometimes used in Japan but is not standard elsewhere.

Cups to Milliliters Converter

Convert US cups to milliliters (and back) instantly. Includes a common kitchen equivalents table.

Enter a Value to Convert

US Cups

cup(s)

Milliliters

Enter a value above to see the conversion result.

Common Kitchen Equivalents

Cups	Fraction	Milliliters

Summary

A fast, client-side converter between US cups and milliliters. Enter any cups or mL value and get the result instantly. A reference table shows the most common kitchen measurements for quick lookup.

How it works

Enter a value in the Cups field to convert to milliliters.
Or enter a value in the mL field to convert back to cups.
Results update instantly as you type.
Use the reference table below for common cooking measurements.
Click Reset to clear both fields.

Use cases

Scale a recipe that lists ingredients in cups when your measuring tools use milliliters.
Convert a foreign recipe from metric (mL) to US cups.
Quickly verify how many mL are in a half cup or quarter cup.
Use the equivalents table as a quick kitchen reference while cooking.

Frequently Asked Questions

Last updated: 2026-10-05 · Reviewed by Nham Vu