Unit Converter - Length, Weight, Temperature, Volume, Area, Speed, Time

Free universal unit converter. Convert between metric and imperial units for length (mm, cm, m, km, in, ft, yd, mi), weight/mass (mg, g, kg, t, oz, lb, st), temperature (°C, °F, K), volume (mL, L, m³, tsp, tbsp, cup, pt, qt, gal, fl oz), area (mm², cm², m², ha, km², in², ft², yd², ac, mi²), speed (m/s, km/h, mph, knots, ft/s), and time (ms, s, min, h, d, wk). Runs entirely in your browser. Unit Converter - Length, Weight, Temperature, Volume, Area, Speed, Time on 712 Tools runs entirely inside your browser using modern JavaScript APIs - no server ever sees your data. That means instant results, complete privacy, and no upload limits.

Whether you need to convert between metric and imperial units - length, weight, temperature, volume, area, speed, and time for a debugging session, a quick sanity check, or a production incident, this tool is free to use as many times as you need. There are no watermarks, no sign-up, and no ads inside the tool itself.