Unit Converter

Length, weight/mass, temperature, volume, area, speed, data storage, and time. Each category has its own unit list — for example volume includes both US and UK (imperial) gallons and pints, which are different sizes and a common source of mix-ups, so they're labeled explicitly.

Results are rounded to a configurable number of decimal places, with a starting default chosen per category (for example temperature defaults to 2 decimal places, while length defaults to 4 since converting between very different scales — millimeters and kilometers, say — needs more decimal places to stay meaningful). Use the decimal places stepper to show more or fewer digits for your specific use case, from a quick recipe conversion to an engineering calculation.

Every other category converts by a simple ratio — 1 mile is always 1.609 kilometers, no matter the starting value. Temperature scales don't share a common zero point (0°C, 0°F, and 0K are three different temperatures), so converting requires an offset as well as a scale, not just a multiplication. This tool handles temperature with its own dedicated conversion logic rather than forcing it into the same ratio-based path as everything else.

No. All conversion math runs entirely in your browser using plain arithmetic — nothing is uploaded, logged, or stored, the same as every tool in this toolbox.