Weight & Mass Converter
Weight and mass conversions between grams, kilograms and tonnes and the US customary and Imperial pound, ounce and stone. The pound is defined as exactly 0.45359237 kilograms.
Result
1 pound = 0.45359237 kilograms
Note. Strictly, kilograms measure mass and pounds-force measure weight, but in everyday use 'weight' conversions between kg and lb assume standard Earth gravity.
Popular weight & mass conversions
All weight & mass units
| Unit | Symbol | System | In kg |
|---|---|---|---|
| Microgram | µg | Metric | 1 × 10⁻⁹ |
| Milligram | mg | Metric | 0.000001 |
| Gram | g | Metric | 0.001 |
| Kilogram | kg | SI | 1 |
| Metric ton | t | Metric | 1,000 |
| Ounce | oz | US customary | 0.0283495231 |
| Pound | lb | US customary | 0.45359237 |
| Stone | st | Imperial | 6.35029318 |
| US short ton | ton | US customary | 907.18474 |
| Imperial long ton | long ton | Imperial | 1,016.046909 |
| Carat | ct | Metric | 0.0002 |
| Grain | gr | US customary | 0.0000647989 |
| Dram | dr | US customary | 0.0017718452 |
| Troy ounce | ozt | Other | 0.0311034768 |
| US hundredweight | cwt | US customary | 45.359237 |
| Imperial hundredweight | long cwt | Imperial | 50.80234544 |
Pounds to Kilograms table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.45359237 kg |
| 2 lb | 0.90718474 kg |
| 3 lb | 1.3607771 kg |
| 4 lb | 1.8143695 kg |
| 5 lb | 2.2679619 kg |
| 6 lb | 2.7215542 kg |
| 7 lb | 3.1751466 kg |
| 8 lb | 3.628739 kg |
| 9 lb | 4.0823313 kg |
| 10 lb | 4.5359237 kg |
| 12 lb | 5.4431084 kg |
| 15 lb | 6.8038856 kg |
| 20 lb | 9.0718474 kg |
| 25 lb | 11.339809 kg |
| 30 lb | 13.607771 kg |
| 50 lb | 22.679619 kg |
| 75 lb | 34.019428 kg |
| 100 lb | 45.359237 kg |
| 500 lb | 226.79619 kg |
| 1,000 lb | 453.59237 kg |
Frequently asked questions
- How do you convert pounds to kilograms?
- 1 pound = 0.45359237 kilograms. Multiply your pounds value by that factor, or use the weight & mass converter above.
- How do you convert kilograms to pounds?
- 1 kilogram = 2.20462262 pounds. Multiply your kilograms value by that factor, or use the weight & mass converter above.
- How do you convert ounces to grams?
- 1 ounce = 28.3495231 grams. Multiply your ounces value by that factor, or use the weight & mass converter above.
- What is the base unit for weight & mass?
- Convertly normalises every weight & mass conversion through the kilogram, so results stay consistent whichever pair of units you pick.
- Anything to watch out for with weight & mass units?
- Strictly, kilograms measure mass and pounds-force measure weight, but in everyday use 'weight' conversions between kg and lb assume standard Earth gravity.