Weight / Mass Converter
Convert kilograms, pounds, grams, ounces, stones and more.
About Weight Units
The kilogram (kg) is the SI base unit of mass, defined since 2019 by the Planck constant. In everyday speech "weight" and "mass" are used interchangeably, though technically weight is a force (mass × gravity). The imperial system uses pounds and ounces, while the UK stone (14 lb) is still widely used for body weight.
Common Conversions
- 1 kg = 2.2046 lbs
- 1 lb = 453.6 g (16 oz)
- 1 stone = 6.35 kg (14 lbs)
- 1 metric ton = 1,000 kg
- 1 US short ton = 907.2 kg
- 1 UK long ton = 1,016 kg
Quick Tips
- Roughly:
kg × 2.2 ≈ lbs - A 70 kg person weighs approximately 154 lbs / 11 stone
- A standard bag of flour is 1 kg (2.2 lbs)
- Gold is priced per troy ounce (31.1 g), not a regular ounce (28.35 g)