Pound to Kilogram Converter
1 pound is exactly 0.45359237 kilograms. Convert pounds (lb) to kilograms (kg) below: type a value and the result updates as you type.
lb to kg calculator
Result
Pound to Kilogram conversion
1 lb = 0.45359237 kgone pound in kilograms
1 kg ≈ 2.204622622 lbone kilogram in pounds
Pound (lb): Exactly 0.45359237 kilograms (avoirdupois pound).
Kilogram (kg): SI base unit of mass, defined by fixing the Planck constant h = 6.62607015e-34 J·s.
Source:Pound: International yard and pound agreement (1959); Kilogram: SI Brochure, 9th edition (BIPM, 2019)
How to convert pounds to kilograms
To convert pounds to kilograms, multiply the number of pounds by 0.45359237.
Formula
kg = lb × 0.45359237
Examples
- 5 lb = 5 × 0.45359237 = 2.26796185 kg
- 25 lb = 25 × 0.45359237 = 11.33980925 kg
- 100 lb = 100 × 0.45359237 = 45.359237 kg
Pound to Kilogram conversion table
| Pound (lb) | Kilogram (kg) |
|---|---|
| 0.1 lb | 0.045359237 kg |
| 0.5 lb | 0.226796185 kg |
| 1 lb | 0.45359237 kg |
| 2 lb | 0.90718474 kg |
| 3 lb | 1.36077711 kg |
| 5 lb | 2.26796185 kg |
| 10 lb | 4.5359237 kg |
| 20 lb | 9.0718474 kg |
| 25 lb | 11.33980925 kg |
| 50 lb | 22.6796185 kg |
| 100 lb | 45.359237 kg |
| 250 lb | 113.3980925 kg |
| 500 lb | 226.796185 kg |
| 1000 lb | 453.59237 kg |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many kilograms are in one pound?
- One pound is exactly 0.45359237 kilograms.
- How do I convert kilograms to pounds?
- To convert kilograms to pounds, divide the number of kilograms by 0.45359237. The formula is lb = kg ÷ 0.45359237.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 0.45359237 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a pound or a kilogram?
- A kilogram is about 2.204622622 times larger than a pound. In other words, a pound is 0.45359237 of a kilogram.