Unit Converter

Pick a category, type a value and choose the unit it is in. Every other unit in that category is converted at once, so there is no separate button for direction — just switch the unit you are converting from.

Metric and imperial units sit in the same list, which is the point: a height in centimetres next to the same height in feet and inches, or a weight in kilograms next to pounds. Temperature covers Celsius, Fahrenheit and Kelvin.

Data sizes are calculated with 1024 as the step, the way an operating system reports them. Drive manufacturers usually count in steps of 1000, which is why a disk sold as 1 TB shows up as noticeably less once it is formatted.

The values you enter are not sent to a server. Everything is calculated inside your browser.