Instantly convert units, time zones, and more. Fast, accurate, and free.
All conversions happen in your browser — nothing is sent to a server.
Our unit converter covers the most commonly needed conversions: length (meters, feet, inches, miles, km), weight (kg, lbs, ounces, grams), temperature (Celsius, Fahrenheit, Kelvin), volume (liters, gallons, cups, ml), area, and speed.
All conversions are calculated using precise SI base unit conversion factors. Temperature is handled with exact formulas rather than approximations.