Unit converters

Convert m, ft, in, mi, km and more with precision.

Convert kg, lb, oz, g, ton and more.

Convert Celsius, Fahrenheit and Kelvin.

Convert m², ft², ac, ha, km² and more — metric, imperial and land units.

Convert L, mL, gal, cup, fl oz, m³ — metric and US customary in one table.

Convert nanoseconds, milliseconds, days, weeks, years — durations in every unit.

Convert m/s, km/h, mph, knots, Mach, ft/s — road, sea, air and engineering.

Convert KB, MB, GB, KiB, MiB, GiB, Mbit — SI vs IEC made obvious.

Convert pressure values across Pa, kPa, bar, psi and atm units.

Convert fuel economy across km/L, L/100km and MPG units.

Convert tsp, tbsp, cups, ml and liters for cooking recipes.

Convert approximate shoe sizes between US, UK and EU scales.