Cups to Milliliters
Convert US cups to milliliters instantly in your browser.
Tool workspace
Conversion runs in your browser. Values are not sent to our servers.
How it works
Enter a value in US customary cups. The tool multiplies by the documented constant 1 US cup = 240 milliliters.
Results update as you type (light debounce) or when you press Convert. Empty input clears the result—no error. Non-numeric input shows a validation message instead of a wrong number.
Displayed values keep up to 10 decimal places and drop trailing zeros so precision stays useful without looking over-rounded.
Results update as you type (light debounce) or when you press Convert. Empty input clears the result—no error. Non-numeric input shows a validation message instead of a wrong number.
Displayed values keep up to 10 decimal places and drop trailing zeros so precision stays useful without looking over-rounded.
Examples
- 1 US cup → 240 mL
- 0 US cup → 0 mL
- 0.5 US cup → 120 mL
Privacy
Privacy: this tool processes values locally in your browser. We do not log or store what you enter. Login is not required.
FAQ
Is my value uploaded to a server?
No. Conversion runs entirely in your browser. Values are not sent to Nova Engine.
Is this a US or metric cup?
US customary cup documented as 240 mL for this tool (common cooking constant). Metric cups (250 mL) and legal US cups differ.
Do I need an account?
No. All published tools work for guests without login.