When to use unit converter
Choose a measurement category before entering a value, so unrelated quantities cannot be mixed. Length conversions use meters as the base and mass conversions use kilograms. Temperature conversions include their offset as well as a scale factor. The output shows enough digits for everyday comparison while keeping the selected units visible.
How it works
- Choose length, mass or temperature.
- Select the source and destination units.
- Enter a value and calculate.
Try this example
100 cm → 39.370079 in
Before you export or rely on the result
These are standard unit definitions, not currency or live exchange rates. Results are rounded for display and are not a substitute for calibrated measurement.
Does this tool upload my input?
No. This tool processes input in your browser. Optional advertisements are separate third-party content and load only when you allow ads. See the privacy notice for hosting logs and advertising details.
Can I use the result without creating an account?
Yes. Unit Converter is free to use without an account. Review the result against the limits above and the requirements of the app or document where you plan to use it.