The short answer
- 1 lb ≈ 0.4535924 kg
- 1 kg ≈ 2.204623 lb
Worked example150 lb × 0.45359237 = 68.03886 kg
UNIT CONVERSION
← Weight converterPounds to kilograms
To convert pounds to kilograms, multiply the number of pounds by 0.45359237.
What the units mean
Pound. The avoirdupois pound is exactly 0.45359237 kilograms and is divided into 16 ounces.
Kilogram. The kilogram is the SI base unit of mass, defined since 2019 through the Planck constant.
Pounds to kilograms table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.4535924 |
| 2 | 0.9071847 |
| 5 | 2.267962 |
| 10 | 4.535924 |
| 20 | 9.071847 |
| 25 | 11.33981 |
| 50 | 22.67962 |
| 100 | 45.35924 |
| 110 | 49.89516 |
| 120 | 54.43108 |
| 130 | 58.96701 |
| 140 | 63.50293 |
| 150 | 68.03886 |
| 160 | 72.57478 |
| 170 | 77.1107 |
| 180 | 81.64663 |
| 190 | 86.18255 |
| 200 | 90.71847 |
| 220 | 99.79032 |
| 250 | 113.3981 |
| 300 | 136.0777 |
Values are rounded to 7 significant figures.
Common questions
How do I convert pounds to kilograms?
Multiply the number of pounds by 0.45359237. For example, 150 lb × 0.45359237 = 68.03886 kg.
How many kilograms are in one pound?
One pound is about 0.4535924 kilograms.
Is this conversion exact?
Yes. Both units have exact legal definitions, so the factor is exact. Values on this page are rounded to 7 significant figures.