Select a category (length, weight, temperature, volume, or speed), choose the from and to units, enter the value, and click Convert. The result is displayed instantly.

You can convert between length units (mm, cm, m, km, inches, feet), weight units (mg, g, kg, ounces, pounds), temperature units (Celsius, Fahrenheit, Kelvin), volume units (ml, dl, liters, gallons), and speed units (km/h, m/s, mph).

1 inch = 2.54 cm, 1 foot = 30.48 cm, 1 mile = 1.609 km, 1 pound = 0.454 kg. The unit converter handles all these conversions automatically.