Converter for weight
Convert between kilograms (kg), pounds (lb), grams (g), ounces (oz), and stones (st). Type in any box—the other value updates instantly.
Quick weight converters
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KG ↔ LB
1 kg = 2.20462262185 lb
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G ↔ OZ
1 g = 0.03527396195 oz
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LB ↔ OZ
1 lb = 16 oz
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KG ↔ G
1 kg = 1000 g
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ST ↔ KG
1 st = 6.35029318 kg
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ST ↔ LB
1 st = 14 lb
Common weight conversions (examples)
| KG | LB |
|---|---|
| 1 | 2.2046 |
| 2.5 | 5.5116 |
| 5 | 11.0231 |
| 10 | 22.0462 |
| 20 | 44.0925 |
| 50 | 110.231 |
How weight conversions work
The base SI unit for mass is the kilogram (kg). Common everyday units include pounds (lb) and ounces (oz) in the US, and stones (st) in the UK/Ireland. Exact factors:
- 1 kg = 2.20462262185 lb
- 1 lb = 0.45359237 kg
- 1 g = 0.03527396195 oz • 1 oz = 28.349523125 g
- 1 st = 6.35029318 kg • 1 st = 14 lb
We compute results at full precision, then round the displayed values for readability.
All weight converters
Weight conversion FAQs
How do I convert kg to lb quickly?
Multiply kilograms by 2.20462262185. For a mental estimate, multiply by 2.2.
How many grams are in an ounce?
Exactly 28.349523125 grams in 1 ounce.
How many pounds are in a stone?
Exactly 14 lb in 1 stone.
What’s the difference between mass and weight?
In everyday use they overlap, but strictly speaking mass is the amount of matter (kg) while weight is the force due to gravity (newtons). These pages use common mass units.