How many kilograms are in a pound?
One international avoirdupois pound is exactly 0.45359237 kilograms.
Detailed answer
Since 1959, the international avoirdupois pound has been defined as exactly 0.45359237 kg. To convert pounds to kilograms, multiply by that factor. To convert kilograms to pounds, divide by that factor or multiply by its reciprocal (~2.20462 lb per kg).
Relationship context
Pounds are US customary / imperial; kilograms are metric (SI). Body weight, shipping labels, and recipes often need conversion between the two systems.
Quick conversion table
| Pound (lb) | Kilogram (kg) |
|---|---|
| 0.1 | 0.045359237 |
| 1 | 0.45359237 |
| 2 | 0.90718474 |
| 3 | 1.36077711 |
| 4 | 1.81436948 |
| 5 | 2.26796185 |
| 6 | 2.72155422 |
| 7 | 3.17514659 |
| 8 | 3.62873896 |
| 9 | 4.08233133 |
| Pound (lb) | Kilogram (kg) |
|---|---|
| 10 | 4.5359237 |
| 20 | 9.0718474 |
| 30 | 13.6077711 |
| 40 | 18.1436948 |
| 50 | 22.6796185 |
| 60 | 27.2155422 |
| 70 | 31.7514659 |
| 80 | 36.2873896 |
| 90 | 40.8233133 |
| 100 | 45.359237 |
More Pounds converters
Dedicated pages from Pound to every other common weight unit (kilogram, gram, milligram, pound, ounce, metric ton, stone, US short ton).
- lb to kg (Pound to Kilogram)
- lb to g (Pound to Gram)
- lb to mg (Pound to Milligram)
- lb to ug (Pound to Microgram)
- lb to oz (Pound to Ounce)
- lb to grain (Pound to Grain)
- lb to carat (Pound to Carat)
- lb to stone (Pound to Stone)
- lb to uk-hundredweight (Pound to Hundredweight (UK))
- lb to us-hundredweight (Pound to Hundredweight (US))
- lb to metric-ton (Pound to Metric Ton)
- lb to long-ton (Pound to Long Ton (UK))
- lb to us-ton (Pound to US Ton (Short))