Unit Converter
Convert between units of length, weight, temperature, volume, area, speed, and data.
Free Online Unit Converter
Convert between units across seven major categories: length (millimeters to miles), weight (milligrams to tons), temperature (Celsius, Fahrenheit, Kelvin), volume (milliliters to gallons), area (square centimeters to acres), speed (meters per second to miles per hour), and digital storage (bits to petabytes). All conversions happen instantly as you type — edit either side and the other updates automatically.
Whether you're a student working on a physics problem, a home cook converting a recipe from US to metric, or a developer calculating file sizes, this converter handles the math so you don't have to.
Common Unit Conversions
Some of the most-searched conversions: 1 kg = 2.20462 lbs, 1 inch = 2.54 cm, 0 C = 32 F, 1 mile = 1.60934 km, 1 gallon = 3.78541 liters, 1 GB = 1,024 MB. The unit converter above handles all of these and hundreds more combinations within each category.