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Pound to Kilogram
Convert pound (lb) to kilogram (kg) — with the exact factor, a quick-reference table and a free converter that works offline.
1 lb = 0.4535924 kg
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Conversion table
| Pound (lb) | Kilogram (kg) |
|---|---|
| 1 lb | 0.4535924 kg |
| 2 lb | 0.9071847 kg |
| 5 lb | 2.267962 kg |
| 10 lb | 4.535924 kg |
| 20 lb | 9.071847 kg |
| 50 lb | 22.67962 kg |
| 100 lb | 45.35924 kg |
| 500 lb | 226.7962 kg |
How the conversion works
Both units measure mass. One pound equals exactly 0.4535924 kg, so multiply by that factor to convert.
FAQ
How many kilograms in a pound?
1 lb = 0.4535924 kg.
How do I convert pound to kilogram?
Multiply the pound value by 0.4535924. For example, 10 lb × 0.4535924 = 4.535924 kg.
Where does the factor come from?
The conversion factor is defined in NIST SP 811; both units are mass units converted through kilogram.
Related conversions
Conversion factors: NIST SP 811. Computed by the same engine that powers the app.
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