Unit Converter: Change Common Length, Weight, Temperature and More
A unit converter helps compare values written in different measurement systems. Choose a measurement type, enter a value and select both units before reading the result.
Convert a measurement
- Choose the measurement type, such as length, weight or temperature.
- Enter the value to convert.
- Choose the From and To units.
- Select Convert and review the result and rounding.
- Use Swap units to reverse the conversion.
Supported measurements
The available categories include common length, mass, temperature, speed, area and volume units. Each category has its own conversion factors; temperature also uses scale offsets.
Check precision and context
Displayed conversions are rounded and do not verify the source measurement. Use calibrated instruments and applicable standards for medical, legal, industrial or safety-critical work.
Frequently asked questions
Why does temperature conversion need a different formula?
Celsius, Fahrenheit and Kelvin have different scale origins, so converting temperature uses an offset as well as a scale factor.
Is a converted value more accurate than the input?
No. Conversion changes units, but cannot improve the accuracy of the original measurement.
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