Unit Converter: Metric, Imperial & Data Units

Convert measurements between supported metric, imperial and digital storage units. Choose a category and the exact units you need.

Your files and tool inputs never leave this browser. This tool is free to use, with no account and no limit.

How to use this tool

Select the measurement category.
Enter a value and choose the source and destination units.
Read the converted result as you type and check the unit labels.

Check the unit as well as the number

A conversion changes how a measurement is expressed, not the underlying quantity: one inch is 2.54 centimetres. Similarly named units can differ, especially US and imperial volumes or decimal and binary data units. Select the specific unit offered in the menu.

Frequently asked questions

Which unit categories are supported?: Length, mass, volume, area, speed, temperature, and digital storage, covering metric, imperial, and other common units. More categories can be added over time.
Can I convert Celsius to Fahrenheit?: Yes. Select Temperature and choose Celsius and Fahrenheit. Temperature conversions include an offset, unlike a simple length scaling factor.