EngiRef / Mass conversion
Convert Pounds to Kilograms (lb to kg)
1 lb = 0.45359237 kg. Convert pounds to kilograms with the exact factor, a common-values table and a free converter.
Conversion factor
kg = lb × 0.45359237
1 lb = 0.45359237 kg
Multiply by 0.45359237 kg to go from pounds to kilograms, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
lb to kg table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.45359237 kg |
| 2 lb | 0.90718474 kg |
| 5 lb | 2.26796185 kg |
| 10 lb | 4.5359237 kg |
| 20 lb | 9.0718474 kg |
| 50 lb | 22.6796185 kg |
| 100 lb | 45.359237 kg |
Every figure is computed at build time by the site’s own converter from the mass unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many kilograms are in one pound?
One pound is 0.45359237 kg, so 100 lb is 45.359237 kg.
What is the formula to convert pounds to kilograms?
kg = lb × 0.45359237. Multiply the value in pounds by 0.45359237 to get kilograms.
How do I convert kilograms back to pounds?
lb = kg × 2.20462262, so 1 kg is 2.20462262 lb. The kg to lb page carries the same table in that direction.