Uses the exact factor 1 lb = 0.45359237 kg, fixed by the 1959 International Yard and Pound Agreement. This is a definition, not a measurement, so it carries no uncertainty.
| kg | lbs | lbs | kg |
|---|---|---|---|
| 1 | 2.2046 | 1 | 0.4536 |
| 5 | 11.0231 | 10 | 4.5359 |
| 10 | 22.0462 | 25 | 11.3398 |
| 20 | 44.0925 | 50 | 22.6796 |
| 50 | 110.231 | 100 | 45.3592 |
| 70 | 154.324 | 150 | 68.0389 |
| 80 | 176.37 | 175 | 79.3787 |
| 100 | 220.462 | 200 | 90.7185 |