Weight converter
Convert kilograms, grams and tonnes to pounds, ounces or stone – with exact factors and instant results.
1 kg=2.2046226 lb
Conversion to all units
| milligram (mg) | 1,000,000 |
| gram (g) | 1,000 |
| tonne (t) | 0.001 |
| ounce (oz) | 35.273962 |
| pound (lb) | 2.2046226 |
| stone (st) | 0.15747304 |
How weight conversion works
The converter calculates through the base unit kilogram, so you can combine any metric and imperial units. The result appears instantly, together with the conversion to all other units.
Key factors: 1 pound (lb) = 0.45359237 kg, 1 ounce (oz) = 28.3495 g and 1 stone (st) = 6.35029 kg, i.e. exactly 14 pounds. A metric tonne is 1,000 kg.
Conversion examples
| Value | Result |
|---|---|
| 1 lb | 0.453592 kg |
| 1 oz | 28.3495 g |
| 1 st | 6.35029 kg |
| 80 kg | 176.37 lb |
| 500 g | 17.637 oz |
| 1 t | 2,204.62 lb |
Frequently asked questions
How many kilograms are in a pound?
One pound (lb) is exactly 0.45359237 kg. For a quick estimate use roughly 0.45 kg – i.e. 2.2 pounds per kilogram.
How many grams are in an ounce?
The common (avoirdupois) ounce is roughly 28.35 g. Note that the troy ounce used for precious metals is heavier – 31.10 g.
What is a stone in kilograms?
A stone (st) is a British unit of body weight: 1 st = 14 pounds = 6.35 kg. A weight of 80 kg is roughly 12.6 stone.
What is the difference between a metric tonne and a US ton?
A metric tonne is 1,000 kg. The US short ton is 907.18 kg and the British long ton 1,016.05 kg – this converter uses the metric tonne.
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Last updated: 15 July 2026