Free Unit Converters
Convert length, weight, temperature, speed, area, volume, data size, currency, and number bases — instantly.
Unit Converters
Fast, accurate unit converters for every measurement you look up — length (cm to inches, feet to meters), weight (kg to lbs), temperature (Celsius to Fahrenheit), speed (mph to km/h), area, volume (ml to oz, liters to gallons), data size, energy, power, pressure, fuel economy, number bases, and live currency exchange rates. Type a value once and see every unit at the same time — no ads blocking the result, just instant conversions for cooking, travel, school, and work.
Frequently asked questions
How many cm are in an inch?
Exactly 2.54 cm. Use the Length Converter for feet, meters, miles, and more — all at once.
Do the converters update live?
Yes — enter a value and every other unit updates instantly, so you never have to press a button.
Are the currency rates up to date?
The currency converter pulls daily exchange rates from a public feed, so use it as a reliable reference for travel and quick conversions.