FREE · CALCULATORS & CONVERTERS
Unit Converter.
Convert length, mass, temperature, area and volume between common units.
How to use Unit Converter
Choose a measurement category, enter a value and select source and destination units.
How it works
Length, mass, area and volume use fixed conversion factors. Temperature uses both a scale and an offset, so it cannot be converted by multiplying alone. Results are displayed to a practical precision; they are not laboratory calibration certificates.
Example
10 km → 6.21371192 miles; 0 °C → 32 °F.
Questions about Unit Converter
Is Unit Converter free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Finite values only. US and imperial volume units are explicitly distinguished. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.