Pounds to Kilograms Converter (lb to kg)
Pounds (lb) are an imperial unit of mass; kilograms (kg) are the SI unit. One pound equals exactly 0.45359237 kilograms, so dividing pounds by 2.20462 gives kilograms.
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1 lb = 0.45359237 kg
Calculation working
- Result = input × source factor ÷ target factor
- 1 × 0.45359237 ÷ 1 = 0.45359237 kg
- Factors refer to the same base quantity. Rounding is applied to the display, not intermediate calculations.
Display: 10 significant digits. More digits do not make the original measurement more accurate.
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Batch conversion
One value per line, up to 200. Uses the selected lb → kg units. Invalid rows stay visible in the results and CSV.
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Using this weight converter
Convert mass for material schedules, parcel labels, ingredient quantities and equipment datasheets.
Kilogram, pound and ounce here measure mass. The category's familiar name is Weight; it does not calculate gravitational force in newtons.
Check before using the result
- Ton means metric tonne: 1,000 kg. It is different from a US short ton or an Imperial long ton.
- Mass does not determine material volume without density. A kilogram of sand and a kilogram of water occupy different volumes.
Definitions and method: NIST: unit conversion factors and rounding. Calculations use double-precision arithmetic; the display precision can be adjusted above.
Pounds to Kilograms conversion chart
| Pound (lb) | Kilogram (kg) |
|---|---|
| 1 | 0.45359237 |
| 5 | 2.26796185 |
| 10 | 4.5359237 |
| 20 | 9.0718474 |
| 50 | 22.6796185 |
| 100 | 45.359237 |
| 120 | 54.4310844 |
| 140 | 63.5029318 |
| 150 | 68.0388555 |
| 160 | 72.5747792 |
| 180 | 81.6466266 |
| 200 | 90.718474 |
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