Pounds to Kilograms
Convert pounds to kilograms (lb to kg). 1 lb = 0.45359237 kg. Use the calculator, formula and conversion table.
How to convert pounds to kilograms
Multiply the amount in pounds by 0.45359237 to get kilograms. The displayed factor and results are rounded to 12 significant digits.
kg = lb × 0.45359237Worked example
1 lb = 0.45359237 kg. Change the amount in the calculator above to use your own value.
Units and assumptions
Uses the international avoirdupois pound: one pound is exactly 0.45359237 kilograms. These are mass conversions; converting volume to mass needs the material’s density.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Pounds to Kilograms table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 0 | 0 |
| 1 | 0.45359237 |
| 5 | 2.26796185 |
| 10 | 4.5359237 |
| 25 | 11.33980925 |
| 100 | 45.359237 |
| 1,000 | 453.59237 |
About this conversion
What is the formula for pounds to kilograms?
kg = lb × 0.45359237. Multiply the amount in pounds by 0.45359237 to get kilograms. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to pounds?
Use the kilograms to pounds calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the weight converter to browse all supported pairs.