MihsabaHow to use
Convert mass between metric and common avoirdupois units through kilograms as a shared base. Metric tonnes and US short tons are kept separate instead of being hidden behind the ambiguous word 'ton'.
- Enter the mass and choose its source unit.
- Choose the target unit such as kg, lb, oz or stone.
- Calculate to see the selected result plus common kg, lb and gram equivalents.
How it is calculated
Result = value × source-unit factor in kilograms ÷ target-unit factor in kilograms; 1 lb = exactly 0.45359237 kg.
Example
Example: 70 kg ÷ 0.45359237 ≈ 154.3236 lb. Since 1 stone = 14 lb, 70 kg ≈ 11.0231 stone.
Important notes
Scientifically these are mass units; weight is a force that depends on gravity. Everyday language often says 'weight', so both terms are used here. The international pound is exactly 0.45359237 kg and an ounce is exactly 1/16 lb.
Frequently asked questions
How many pounds are in a kilogram?
1 kg ≈ 2.20462262185 lb.
How many grams are in an ounce?
One avoirdupois ounce is exactly 28.349523125 grams.
Is a metric tonne the same as a US ton?
No. A metric tonne is 1,000 kg, while a US short ton is 907.18474 kg.
Is this calculator free?
Yes. It is free to use and requires no account.