Convert pounds to kilograms
Enter a value in pounds to convert it to kilograms.
pounds to kilograms reference
| pounds | kilograms |
|---|---|
| 1 lb | 0.4536 kg |
| 2 lb | 0.9072 kg |
| 5 lb | 2.268 kg |
| 10 lb | 4.5359 kg |
| 25 lb | 11.3398 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
The conversion factor
One pound is 0.45359237 kilograms. So to convert, multiply your figure in pounds by 0.45359237. To go the other way, multiply kilograms by 2.20462262, or use the kilograms to pounds converter.
Doing it in your head
For a quick estimate, round the factor: roughly "divide by 2". Use the exact converter above when the number matters.
Where this conversion comes up
Recipes, shipping and luggage limits, body weight, and nutrition labels.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many kilograms are in a pound?
1 pound = 0.453592 kilograms.
What is the formula to convert pounds to kilograms?
Multiply the number of pounds by 0.45359237. To go back the other way, multiply kilograms by 2.20462262.
What is 10 pounds in kilograms?
10 pounds = 4.5359 kilograms. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.