Pounds to Kilograms (lb to kg)
A fast pounds-to-kilograms calculator – the result updates as you type.
1 lb = 0.453592 kg
1 lb = 0.453592 kg. Enter a value and get the result instantly. Below you will find the formula and a table of commonly used values.
Formula
kg = lb × 0.45359237
lb to kg table
| lb | kg |
|---|---|
| 1 lb | 0.4536 kg |
| 2 lb | 0.9072 kg |
| 5 lb | 2.268 kg |
| 10 lb | 4.5359 kg |
| 20 lb | 9.0718 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
| 500 lb | 226.7962 kg |
| 1,000 lb | 453.5924 kg |
Where it is used
Pounds are converted to kilograms when reading US or British recipes, workout programmes (barbell plates often weigh 45 pounds), body weight, product descriptions and parcel weights.
A quick mental shortcut
1 pound = 0.45359237 kg. Roughly, halve the number and subtract a tenth of the result: 150 pounds becomes 75 - 7.5 = 67.5 kg (the exact result is 68.04 kg).
Exact examples: 200 pounds x 0.45359237 = 90.72 kg; 45 pounds = 20.41 kg.
Good to know
The abbreviation lb comes from the Latin word libra, meaning a balance or scales.