Unit Converters

Fast, high-precision bidirectional conversion tables across 11 scientific, engineering, and everyday unit categories.

11 converter categories available

Convert between meters, feet, inches, kilometers, miles, yards, and nautical miles

Convert kilograms, pounds, ounces, grams, stones, and metric tons

Convert between Celsius, Fahrenheit, and absolute Kelvin temperature scales

Convert square meters, square feet, acres, hectares, and square kilometers

Convert liters, milliliters, gallons, cubic meters, and fluid ounces

Convert km/h, miles per hour (mph), meters per second (m/s), and knots

Convert Pascals, Bar, PSI, Standard Atmospheres (atm), and mmHg

Convert Joules, Kilojoules, Calories, Kilocalories, Kilowatt-hours (kWh), and BTU

Convert Watts, Kilowatts, Mechanical Horsepower (hp), and BTU per hour

Convert Bytes, KB, MB, GB, TB with both Decimal (1000) and Binary (1024) standards

Convert seconds, minutes, hours, days, weeks, months, and calendar years