Verified no-login tool
Convert length, weight, temperature, volume and more between metric and imperial — instant answers, no math.
Pick the measurement type — length, weight, temperature, volume or area.
Enter the value and choose the units you're converting from and to.
The converted result appears instantly.
Copy the answer or convert the next value.
Built for speed, privacy and reliability — on any device.
Length, weight, temperature, volume and area — the units real work uses.
cm to inches, kg to pounds, Celsius to Fahrenheit — both directions, instantly.
Conversion runs locally — nothing you type reaches a server.
Designers and makers use it to hit exact print and cut dimensions.
No account, no limits, no clutter.
Choose the category, enter your value, and pick the units. The answer appears instantly — free, no account.
Centimeters to inches, kilograms to pounds, and Celsius to Fahrenheit top the list — especially between metric and imperial countries.
Exact to the standard conversion factors — more precision than any practical task needs. Temperature formulas are exact, not approximations.
No. The conversion runs entirely in your browser, so nothing you type ever leaves your device.
The tool works in all modern browsers including Google Chrome, Mozilla Firefox, Microsoft Edge, Safari and Opera. We recommend keeping your browser up to date for the best experience.
Unit converter — metric to imperial, instant & free