Convert Pounds to Kilograms
Pounds (lb) to Kilograms (kg) — the formula, a worked example and a live converter, all in your browser.
Pounds to Kilograms formula
To convert a measurement, multiply it by the fixed factor below:
kg = lb × 0.45359237
Worked example
1 lb = 1 × 0.45359237 = 0.45359237 kg.
Pounds to Kilograms conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.45359237 |
| 5 | 2.26796185 |
| 10 | 4.5359237 |
| 25 | 11.33980925 |
| 50 | 22.6796185 |
| 100 | 45.359237 |
Common uses
Useful for logging weight in kilograms, calculating medication doses and converting US shipping weights.
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Frequently asked questions
What is the formula to convert pounds to kilograms?
Multiply the number of pounds by 0.45359237 to get kilograms (kg = lb × 0.45359237).
How many kilograms are in a pound?
One pound equals 0.45359237 kilograms.
Is this converter accurate?
Yes. It uses the exact internationally-defined conversion factors and runs entirely in your browser, so results match standards tables and nothing you type is uploaded.