Pounds to Kilograms Converter (lb to kg)
Type a value in pounds to see it in kilograms instantly.
1 pound (lb) = 0.45359237 kilograms (kg)
1 kilogram (kg) = 2.20462262 pounds (lb)
How to convert pounds to kilograms
Multiply the number of pounds by 0.45359237, or divide by 2.20462262.
kg = lb × 0.45359237 (or lb ÷ 2.20462262)
Example: 150 lb × 0.45359237 = 68.0389 kg
A quick estimate is to halve the pounds and subtract 10%: 150 lb ÷ 2 = 75, minus 7.5 gives 67.5 kg (exact: 68.04 kg).
lb to kg conversion table
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 lb | 0.453592 kg |
| 2 lb | 0.907185 kg |
| 5 lb | 2.26796 kg |
| 10 lb | 4.53592 kg |
| 15 lb | 6.80389 kg |
| 20 lb | 9.07185 kg |
| 25 lb | 11.3398 kg |
| 30 lb | 13.6078 kg |
| 40 lb | 18.1437 kg |
| 45 lb | 20.4117 kg |
| 50 lb | 22.6796 kg |
| 100 lb | 45.3592 kg |
| 120 lb | 54.4311 kg |
| 130 lb | 58.967 kg |
| 140 lb | 63.5029 kg |
| 150 lb | 68.0389 kg |
| 160 lb | 72.5748 kg |
| 170 lb | 77.1107 kg |
| 180 lb | 81.6466 kg |
| 200 lb | 90.7185 kg |
| 220 lb | 99.7903 kg |
| 250 lb | 113.398 kg |
| 300 lb | 136.078 kg |
About the units
Pound (lb)
The international avoirdupois pound is defined as exactly 0.45359237 kilograms. It is the everyday unit of body weight and grocery weight in the United States.
Kilogram (kg)
The kilogram is the SI base unit of mass. Since 2019 it has been defined by fixing the value of the Planck constant, rather than by a physical prototype.
Frequently asked questions
How many kilograms are in 1 pound?
1 pound equals 0.45359237 kilograms.
How do I convert pounds to kilograms?
Multiply the number of pounds by 0.45359237, or divide by 2.20462262. For example, 150 lb × 0.45359237 = 68.0389 kg.
How many pounds are in 1 kilogram?
1 kilogram equals 2.20462262 pounds.
Why is lbs the abbreviation for pounds?
"lb" comes from the Latin libra, a Roman unit of weight. "lbs" is an informal plural; the official symbol is lb for both singular and plural.
Related conversions
- kg to lbKilograms to Pounds
- g to ozGrams to Ounces
- oz to gOunces to Grams
- st to kgStone to Kilograms
Background reading: Metric vs. Imperial.