Convert Pound to Kilogram
Convert Pound to Kilogram instantly. 1 lb = 0.453592 kg. Formula, worked examples and a quick reference table.
Last updated
One pound equals 0.453592 kilogram. To convert any number of pounds to kilograms, multiply by 0.45359237.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Pound to Kilogram formula
To go the other way, use pound = kilogram ÷ 0.45359237.
About these units
The international avoirdupois pound is exactly 0.45359237 kilograms — defined in terms of the metric system, not the other way round.
Since 2019 the kilogram has been defined by the Planck constant rather than a metal cylinder in Paris, making it reproducible in any properly equipped laboratory.
Pound to Kilogram conversion table
| Pound | Kilogram |
|---|---|
| 1 lb | 0.4536 kg |
| 2 lb | 0.9072 kg |
| 3 lb | 1.3608 kg |
| 5 lb | 2.268 kg |
| 10 lb | 4.5359 kg |
| 20 lb | 9.0718 kg |
| 25 lb | 11.3398 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
| 250 lb | 113.3981 kg |
| 500 lb | 226.7962 kg |
| 1,000 lb | 453.5924 kg |
Frequently asked questions
How many kilograms are in a pound? +
There are 0.453592 kilograms in one pound.
What is 10 lb in kg? +
10 lb equals 4.5359 kg. Multiply 10 by 0.45359237.
How do I convert kilogram back to pound? +
Use pound = kilogram ÷ 0.45359237. The converter above handles both directions, or see our dedicated Kilogram to Pound page.