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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 23 area units — square metres, square feet, acres, hectares, square miles, plus regional units like bigha, marla, kanal and guntha.
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 24 pressure units — pascals, kPa, bar, psi, atmospheres, torr, mmHg and inHg. Covers tyre, weather, medical and engineering pressures.
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 energy units — joules, kilojoules, calories, kilocalories, watt-hours, kWh, BTU, electronvolts and foot-pounds.
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 20 time units — seconds, minutes, hours, days, weeks, months, years, milliseconds and more, from Planck time to millennia.
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 Celsius, Fahrenheit, Kelvin, Rankine and four historical temperature scales. Handles the offset correctly — not just a multiplication.
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