Unit Converter
Convert between metric and imperial units. Length, mass, temperature, volume, area, speed, time, data and energy — instant, in both directions.
Enter a value to convert.
Try:
Frequently asked questions
Are these exact conversions?
Yes, using international standard factors (for example 1 in = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Results are rounded only for display.
KB or KiB?
Data units include both SI (KB = 1000 bytes) and binary (KiB = 1024 bytes). Storage vendors usually advertise SI; operating systems often show binary.
Which teaspoon and gallon?
Cooking volume uses US legal units (US gallon, US cup). UK imperial volume is not listed in this first version.