Convert Pound to Kilogram
Live bidirectional calculator for Pounds (lb) and Kilograms (kg) with verified formula and conversion charts.
Weight & Mass8 units
How the Calculation Works (Linear Scaling)
Since 1 Kilogram = 2.204623 Pounds, divide the value in Pounds by 2.204623.
Pound to Kilogram Conversion Table
Precomputed values for quick reference and printing.
| Pound | Kilogram |
|---|---|
| 1 lb | 0.4536 kg |
| 2 lb | 0.9072 kg |
| 3 lb | 1.3608 kg |
| 4 lb | 1.8144 kg |
| 5 lb | 2.268 kg |
| 6 lb | 2.7216 kg |
| 7 lb | 3.1751 kg |
| 8 lb | 3.6287 kg |
| 9 lb | 4.0823 kg |
| 10 lb | 4.5359 kg |
| 15 lb | 6.8039 kg |
| 20 lb | 9.0718 kg |
| 25 lb | 11.3398 kg |
| 30 lb | 13.6078 kg |
| 40 lb | 18.1437 kg |
| 50 lb | 22.6796 kg |
| 75 lb | 34.0194 kg |
| 100 lb | 45.3592 kg |
| Kilogram | Pound |
|---|---|
| 1 kg | 2.2046 lb |
| 2 kg | 4.4092 lb |
| 3 kg | 6.6139 lb |
| 4 kg | 8.8185 lb |
| 5 kg | 11.0231 lb |
| 6 kg | 13.2277 lb |
| 7 kg | 15.4324 lb |
| 8 kg | 17.637 lb |
| 9 kg | 19.8416 lb |
| 10 kg | 22.0462 lb |
| 15 kg | 33.0693 lb |
| 20 kg | 44.0925 lb |
| 25 kg | 55.1156 lb |
| 30 kg | 66.1387 lb |
| 40 kg | 88.1849 lb |
| 50 kg | 110.2311 lb |
| 75 kg | 165.3467 lb |
| 100 kg | 220.4623 lb |
๐ Standard Benchmark Reference Values
International pound defined as exactly 0.45359237 kg.
ApproximateAbout Pound (lb)
The avoirdupois pound is defined as exactly 0.45359237 kilograms by international agreement.
History: Derived from the Roman "libra pondo" (hence the symbol lb). Standardized internationally in 1959.
Common Uses: Body weight in the US and UK, grocery items, cooking, and gym weights.
About Kilogram (kg)
The kilogram is the SI base unit of mass, defined by fixing the Planck constant at exactly 6.62607015 ร 10โปยณโด Jยทs.
History: Originally defined in 1795 as the mass of one liter of water. Redefined in 2019 via the Planck constant, replacing the International Prototype Kilogram.
Common Uses: Body weight, groceries, cooking, industrial manufacturing, and scientific measurement.
โ Frequently Asked Questions
How many Kilograms are in 1 Pound?
There are exactly 0.453592 Kilograms in 1 Pound (1 lb = 0.453592 kg).
What is the formula to convert Pound to Kilogram?
The formula is: Kilogram = Pound / 2.204623. Since 1 Kilogram = 2.204623 Pounds, divide the value in Pounds by 2.204623.
How do I convert 1 lb to kg manually?
To convert 1 lb to kg: apply the formula Kilogram = Pound / 2.204623. Substituting gives: 1 / 2.204623 = 0.4536 kg.