Pounds to Kilograms
Convert pounds (lb) to kilograms (kg) instantly — with formula and reference table.
Quick answer: 1 lb = 0.453592 kg. To convert pounds to kilograms, multiply by lb × 0.453592.
Converting pounds to kilograms
This converter changes a value in pounds (lb) into kilograms (kg). One pound equals 0.453592 kg. To go from pounds to kilograms, multiply by 0.45359237 (or divide by 2.20462). The pound is defined as exactly 0.45359237 kilograms. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.
Formula
kg = lb × 0.453592
Example
Convert 10 lb to kg: 10 × 0.453592 = 4.535924 kg.
Pounds to Kilograms conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.453592 kg |
| 2 lb | 0.907185 kg |
| 3 lb | 1.360777 kg |
| 5 lb | 2.267962 kg |
| 10 lb | 4.535924 kg |
| 20 lb | 9.071847 kg |
| 25 lb | 11.339809 kg |
| 50 lb | 22.679619 kg |
| 100 lb | 45.359237 kg |
How to use this converter
- Enter a value in the pounds (lb) field.
- Read the converted value in kilograms (kg) below.
- Type into the kg field instead to convert in reverse, or use the swap button.
Frequently asked questions
How many kilograms are in a pound?
1 pound equals exactly 0.45359237 kilograms — roughly 0.4536 kg.
How do I convert 150 lb to kg?
150 × 0.45359237 = 68.04 kg.
Why is the pound defined in terms of the kilogram?
Since 1959 the international avoirdupois pound has been legally defined as exactly 0.45359237 kg, tying it to the SI standard.