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Convert pounds to kilograms
Instant, accurate lb → kg conversion with a live converter, table and formula.
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1 pound = 0.453592 kilograms
1 kilogram = 2.20462 pounds
pounds to kilograms table
| pounds (lb) | kilograms (kg) |
|---|---|
| 0.5 | 0.226796 |
| 1 | 0.453592 |
| 2 | 0.907185 |
| 5 | 2.26796 |
| 10 | 4.53592 |
| 20 | 9.07185 |
| 50 | 22.6796 |
| 100 | 45.3592 |
| 500 | 226.796 |
| 1000 | 453.592 |
Formula
kilograms = pounds × 0.453592.
Example
10 pounds = 4.53592 kilograms.
What is a pound?
A pound (lb) is 16 ounces (0.4536 kg), the imperial unit for body weight in the US.
What is a kilogram?
The kilogram (kg) is the SI base unit of mass; one liter of water weighs about 1 kg.
Real-world reference points
A kilogram is a liter of water; a pound is a loaf of bread; an ounce is a slice of it.
| Reference | pounds | kilograms |
|---|---|---|
| Smartphone | 0.397 lb | 0.18 kg |
| Liter of water | 2.2 lb | 1 kg |
| Newborn baby (average) | 7.28 lb | 3.3 kg |
| Airline checked-bag limit (common) | 50.71 lb | 23 kg |
| Cement bag (standard) | 110 lb | 50 kg |
Mistakes to avoid with mass conversions
- Confusing weight ounces with fluid ounces — one measures mass, the other volume.
- Reading 'stone and pounds' (11 st 6 lb) as decimal stone (11.6 st) — they differ.
- Comparing net vs gross weight when shipping: the box and padding count toward limits.
Frequently asked questions
How many kilograms in a pounds?+
1 pound = 0.453592 kilograms.
How do I convert pounds to kilograms?+
Enter the value in the pounds box above and the kilograms value appears instantly. You can also type in the kilograms box to convert the other way.
Is this lb to kg converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.