Convert length, weight, temperature, area, volume and more.
Every Unit Converters tool — free, no sign-up, and nothing to install.
Convert between 30 length and distance units — millimetres, centimetres, metres, kilometres, inches, feet, yards, miles, nautical miles and more. Instant, exact and free.
Convert between 27 weight and mass units — grams, kilograms, tonnes, ounces, pounds, stones, US and UK tons, troy weights and more. Free and instant.
Convert between Celsius, Fahrenheit, Kelvin, Rankine and four historical temperature scales. Handles the offset correctly — not just a multiplication.
Convert between 23 area units — square metres, square feet, acres, hectares, square miles, plus regional units like bigha, marla, kanal and guntha.
Convert between 33 volume units — litres, millilitres, cubic metres, gallons, quarts, pints, cups and fluid ounces, with US and imperial measures kept separate.
Convert between 16 speed units — km/h, mph, metres per second, knots, feet per second, Mach and the speed of light. Instant and free.
Convert between 20 time units — seconds, minutes, hours, days, weeks, months, years, milliseconds and more, from Planck time to millennia.
Convert between 26 digital storage units — bytes, KB, MB, GB, TB, and the binary KiB, MiB, GiB and TiB. Explains the decimal versus binary difference.
Convert between 27 energy units — joules, kilojoules, calories, kilocalories, watt-hours, kWh, BTU, electronvolts and foot-pounds.
Convert between 24 pressure units — pascals, kPa, bar, psi, atmospheres, torr, mmHg and inHg. Covers tyre, weather, medical and engineering pressures.
Showing all 10 tools
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