One Tool.
Every Conversion
You'll Ever Need.
Whether you are cooking, travelling, studying or working — our unit converter covers all the measurements you use every day. Switch between metric and imperial with a single click.
Over 70 individual units across 8 categories — all calculated instantly, all completely free.
Start Converting →8 Conversion Categories
Click any category to start converting right away
Length
Metres, feet, miles, inches, km and more
Weight
kg, lbs, stone, ounces, tonnes
Temperature
Celsius, Fahrenheit, Kelvin
Volume
Litres, gallons, pints, cups, fl oz
Speed
km/h, mph, m/s, knots, Mach
Area
m², acres, hectares, sq ft, sq miles
Time
Seconds, minutes, hours, days, years
Data
Bytes, KB, MB, GB, TB, bits
Simple to Use
Convert any unit in three easy steps
Pick a Category
Choose from length, weight, temperature, volume, speed, area, time or data.
Select Your Units
Choose what you are converting from and to — from a list of over 70 units.
Get Your Answer
Type your value and the result appears instantly. Use the swap button to reverse.