Weight Converter
Mass in metric and imperial units.
Conversion
Pounds to Kilograms Converter
1 pound = 0.45359237 kg. Enter any value to convert pounds (lb) to kilograms (kg), or use the table below for common values.
Formula
kg = lb × 0.45359237
Example: 10 lb = 4.5359237 kg. To convert the other way, use lb = kg × 2.204622622.
Quick mental estimate: multiply by about 0.45.
Pounds to Kilograms conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.45359237 kg |
| 2 lb | 0.90718474 kg |
| 3 lb | 1.36077711 kg |
| 4 lb | 1.81436948 kg |
| 5 lb | 2.26796185 kg |
| 6 lb | 2.72155422 kg |
| 7 lb | 3.17514659 kg |
| 8 lb | 3.62873896 kg |
| 9 lb | 4.08233133 kg |
| 10 lb | 4.5359237 kg |
| 15 lb | 6.80388555 kg |
| 20 lb | 9.0718474 kg |
| 25 lb | 11.33980925 kg |
| 30 lb | 13.6077711 kg |
| 40 lb | 18.1436948 kg |
| 50 lb | 22.6796185 kg |
| 75 lb | 34.01942775 kg |
| 100 lb | 45.359237 kg |
| 250 lb | 113.3980925 kg |
| 500 lb | 226.796185 kg |
| 1,000 lb | 453.59237 kg |
About pounds and kilograms
The international avoirdupois pound is exactly 0.45359237 kilograms. It is the everyday unit for body weight and groceries in the US.
The kilogram is the SI base unit of mass, defined since 2019 by the Planck constant. Body weight and most goods are measured in kilograms worldwide.
Other Weight conversions
Frequently asked questions
How do I convert pounds to kilograms?
Use the formula kg = lb × 0.45359237. For example, 10 lb = 4.5359237 kg.
What is 1 pound in kilograms?
1 lb = 0.45359237 kg.
How do I convert kilograms back to pounds?
Use lb = kg × 2.204622622. 1 kg = 2.204622622 lb.