Numbers & calculations

Unit converter

From one measure to another. Length, mass and temperature, sorted.

Your result—

How it works

Select a measurement, enter a value and choose both units. Length and mass use fixed factors. Temperature also needs an offset.

Try an example

1 in = 2.54 cm · 0 °C = 32 °F

International inch and avoirdupois pound. Values below absolute zero are rejected. No currency or cooking-unit conversions.

Updated · 2026-09-22