Free Unit Converters
Convert between units of measurement instantly with our free online converters. From temperature and length to data storage and energy, each converter supports dozens of units and delivers precise results. All conversions happen in your browser — nothing is uploaded, and no signup is required.
All Converters
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin.
Length Converter
Convert meters, feet, inches, miles, and more.
Weight Converter
Convert kg, pounds, ounces, stone, and tonnes.
Speed Converter
Convert mph, km/h, knots, and m/s.
Volume Converter
Convert liters, gallons, cups, tablespoons, and more.
Area Converter
Convert square meters, feet, acres, and hectares.
Data Storage Converter
Convert bytes, KB, MB, GB, TB, and PB.
Time Converter
Convert seconds, minutes, hours, days, and weeks.
Pressure Converter
Convert PSI, bar, ATM, pascal, and mmHg.
Energy Converter
Convert joules, calories, kWh, and BTU.