Every common mass unit in one place: metric (mg → tons) and imperial (oz, lb, stone).
How it works
- Choose the mass unit you have, and the one you want to calculate.
- Type in the weight value.
- The tool processes the conversion locally using the standard 0.45359237 kg baseline.
Frequently asked questions
Pounds to kg quick rule?
Divide by 2.2 (precisely 2.20462).
What is a stone?
A British unit equal to 14 lb (~6.35 kg), still standard for body weight in the UK.
Is weight the same as mass?
Technically mass is matter and weight is gravitational force; in everyday conversion they are used interchangeably.