What unit categories are supported?

Length (millimeters through miles), weight (milligrams through metric tons and pounds), and temperature (Celsius, Fahrenheit, and Kelvin), with more categories planned.

How precise are the conversions?

Conversions use standard internationally recognized conversion factors and display up to six decimal places, which is more than enough precision for everyday and professional use.

Unit Converters Education

Unit Converter

Convert between length, weight, and temperature units instantly.

About this tool

Convert common length, weight, and temperature units in either direction — metric to imperial or imperial to metric. Pick a category, choose your "from" and "to" units, and the result updates as you type.

How to use this tool

1
Pick a category
Choose length, weight, or temperature.
2
Select your units
Set the "from" and "to" units using the dropdowns.
3
Enter an amount
Type a value and the converted result updates instantly.

Frequently asked questions

What unit categories are supported?: Length (millimeters through miles), weight (milligrams through metric tons and pounds), and temperature (Celsius, Fahrenheit, and Kelvin), with more categories planned.
How precise are the conversions?: Conversions use standard internationally recognized conversion factors and display up to six decimal places, which is more than enough precision for everyday and professional use.