Unit Converters

Accurate unit converters for common scientific, engineering, computing and everyday measurements.

12 tools

Convert kilograms, grams, milligrams, metric tons, pounds, ounces and stones using reliable mass conversion factors.

Convert meters, kilometers, centimeters, millimeters, miles, yards, feet and inches with precise standard factors.

Convert liters, milliliters, cubic meters, US and UK gallons, fluid ounces and cups with distinct standards.

Convert accurately between Celsius, Fahrenheit, Kelvin and Rankine using scale-aware temperature formulas.

Convert square meters, square kilometers, square centimeters, hectares, acres, square feet and square inches.

Convert meters per second, kilometers per hour, miles per hour, knots and feet per second instantly.

Convert bytes, decimal KB, MB and GB, binary KiB, MiB and GiB, and bits without mixing storage standards.

Convert pascals, kilopascals, bars, atmospheres, PSI and millimeters of mercury using standard pressure factors.

Convert joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours and British thermal units.

Convert degrees, radians, gradians, turns, arcminutes and arcseconds for mathematics, surveying and engineering.

Convert newtons, kilonewtons, dynes, pound-force and kilogram-force using standard mechanical conversion factors.

Convert watts, kilowatts, megawatts, mechanical horsepower and BTU per hour with accurate reference factors.