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Pounds are the imperial unit of weight; kilograms the metric one. Bodyweight, gym plates, luggage and shipping all cross between them, so this converter turns pounds into kilograms and back with a fixed factor.
How is it calculated?
The conversion factor
1 pound = 0.453592 kilograms (and 1 kg = 2.20462 lb).
| To convert | Do this |
|---|---|
| lb → kg | multiply by 0.453592 |
| kg → lb | multiply by 2.20462 |
Common values
| Pounds | Kilograms |
|---|---|
| 1 lb | 0.45 kg |
| 10 lb | 4.54 kg |
| 100 lb | 45.36 kg |
| 150 lb | 68.04 kg |
Worked example
A 150 lb person weighs 150 × 0.453592 = 68.0 kg. A 45 lb barbell plate is 45 × 0.453592 = 20.4 kg, close to the 20 kg metric plate.
FAQ
How many kg is 1 pound?+
One pound is 0.453592 kilograms — a little under half a kilo. To convert pounds to kilograms, multiply by 0.453592 (or divide by 2.20462).
How do I convert lbs to kg?+
Multiply the pound value by 0.453592, or divide by 2.20462. For a quick estimate, halve it and take off a little: 100 lb ≈ 45 kg.
How do I convert kg back to pounds?+
Multiply the kilogram value by 2.20462. So 70 kg × 2.20462 = 154.3 lb.
What is 200 lbs in kg?+
200 pounds is 90.7 kilograms. Conversely, 90 kg is about 198.4 lb.
Is the conversion exact?+
The factor 0.45359237 kg per pound is exact by definition, so the conversion is precise; results are just rounded for display.