Pounds to Kilograms (lb to kg)
1 lb = 0.4535924 kg. Multiply pounds by 0.4535924; the box below does it both ways.
kilograms
10 lb = 4.5359 kg · kilograms to pounds page
How to convert pounds to kilograms
- Take the value in pounds.
- Multiply by 0.4535924 (because 1 lb = 0.4535924 kg).
- Example: 10 lb × 0.4535924 = 4.5359 kg.
- Going back: divide by 0.4535924, or multiply by 2.204623.
Where this comes up
A pound is exactly 0.45359237 kg. US weight figures (a 150 lb person is 68 kg), baggage allowances (50 lb is 22.7 kg) and recipe quantities all need it. Quick estimate: halve the pounds and knock off 10%.
| lb | kg |
|---|---|
| 1 | 0.45359 |
| 2 | 0.90718 |
| 5 | 2.268 |
| 10 | 4.5359 |
| 20 | 9.0718 |
| 45 | 20.4117 |
| 50 | 22.6796 |
| 100 | 45.3592 |
| 110 | 49.8952 |
| 130 | 58.967 |
| 150 | 68.0389 |
| 160 | 72.5748 |
| 180 | 81.6466 |
| 200 | 90.7185 |
| 220 | 99.7903 |
| 250 | 113.3981 |
Questions people ask
How many kilograms are in 1 pound?
1 lb = 0.4535924 kg. To convert, multiply the pound value by 0.4535924.
What is 110 lb in kg?
110 lb is 49.8952 kg.
How do I convert kilograms back to pounds?
Divide by 0.4535924, or multiply by 2.204623: 1 kg = 2.204623 lb.
More weight conversions
Kilograms to Pounds (kg to lb) · g to oz · oz to g · kg to oz · oz to kg · st to kg · kg to st · lb to g · all converters
Factors are the exact international definitions; last checked 2026-10-10.