Unit Converter
Convert between metric and imperial units across 6 categories. Every pair — like kilometers to miles or pounds to kilograms — has its own page with the conversion formula, a reference table, and a live bidirectional converter.
Length
72 pairsConvert between metric and imperial length units — millimeters, meters, kilometers, inches, feet, yards, miles and nautical miles.
mmcmmkminft+3Weight
42 pairsConvert between mass units — milligrams, grams, kilograms, metric tonnes, pounds, ounces and stones.
mggkgtlboz+1Temperature
6 pairsConvert between temperature scales — Celsius, Fahrenheit and Kelvin.
°C°FKVolume
56 pairsConvert between volume units — milliliters, liters, US and UK gallons, quarts, pints, cups and fluid ounces.
mLLgal (US)qt (US)pt (US)cup (US)+2Area
42 pairsConvert between area units — square meters, square kilometers, hectares, acres, square feet, square yards and square miles.
m²km²haacft²yd²+1Speed
20 pairsConvert between speed units — meters per second, kilometers per hour, miles per hour, knots and feet per second.
m/skm/hmphknft/s