Home / Unit Converters
Eight converters covering the units that actually come up: length, weight, volume, area, temperature, speed, CSS typography and medical weights — each showing every target unit at once.
Meters, km, miles, feet, inches, yards and nautical miles at once.
Convert → WEIGHTKg, pounds, ounces, stones and tonnes — micrograms to tons.
Convert → VOLUMELiters, gallons, quarts, cups, fluid ounces and cubic feet.
Convert → AREASquare meters, feet, yards, acres, hectares and square miles.
Convert → TEMPERATURECelsius, Fahrenheit and Kelvin with the exact shift formulas.
Convert → SPEEDMPH, km/h, m/s, knots and ft/s for driving, running and sailing.
Convert → CSSPX, PT, REM and EM against your own base font size.
Convert → MCG ↔ MGMicrogram, milligram and gram — precision medical weight units.
Convert →Every conversion uses the internationally defined exact factor — 1 mile is precisely 1,609.344 meters, 1 US gallon is precisely 3.785411784 liters — applied at full precision with no rounded shortcuts. Each converter shows your value in all its units at once, so you never have to convert twice.
Looking for math calculators instead? The Math & Statistics category covers fractions, trigonometry, statistics and more.