How to convert pounds to kilograms
kg = lb × 0.45359237
Example: 5 lb × 0.45359237 = 2.26796185 kg
Pounds to Kilograms table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 0.5 lb | 0.22679619 kg |
| 1 lb | 0.45359237 kg |
| 2 lb | 0.90718474 kg |
| 3 lb | 1.3607771 kg |
| 4 lb | 1.8143695 kg |
| 5 lb | 2.2679619 kg |
| 6 lb | 2.7215542 kg |
| 7 lb | 3.1751466 kg |
| 8 lb | 3.628739 kg |
| 9 lb | 4.0823313 kg |
| 10 lb | 4.5359237 kg |
| 15 lb | 6.8038856 kg |
| 20 lb | 9.0718474 kg |
| 25 lb | 11.339809 kg |
| 30 lb | 13.607771 kg |
| 40 lb | 18.143695 kg |
| 50 lb | 22.679619 kg |
| 75 lb | 34.019428 kg |
| 100 lb | 45.359237 kg |
| 250 lb | 113.39809 kg |
| 500 lb | 226.79619 kg |
| 1,000 lb | 453.59237 kg |
About these units
Pounds (lb): The pound (avoirdupois) is exactly 0.45359237 kg and contains 16 ounces. It is used for body weight and groceries in the US.
Kilograms (kg): The kilogram is the SI base unit of mass, defined through the Planck constant since 2019. It equals 1,000 grams.
Frequently asked questions
How many kilograms are in 1 pound?
1 pound (lb) equals 0.45359237 kilograms (kg).
How do I convert lb to kg?
Multiply the value in pounds by 0.45359237. For example, 5 lb × 0.45359237 = 2.26796185 kg.
How do I convert kilograms back to pounds?
Multiply by 2.204622622 (or divide by 0.45359237). 1 kg = 2.204622622 lb.
What is a pound?
The pound (avoirdupois) is exactly 0.45359237 kg and contains 16 ounces. It is used for body weight and groceries in the US.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every weight / mass unit at once? Use the Weight Converter.