| Pounds (lbs) | Kilograms (kg) |
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Multiply pounds by 0.453592 to convert to kilograms.
To convert pounds to kilograms, multiply by 0.453592. This conversion is exact enough for everyday use and is based on the international definition of the pound: 1 lb = 0.45359237 kg. Example: 150 lbs × 0.453592 = 68.04 kg. Another common example is 200 lbs, which equals 90.72 kg.
For quick mental math, you can divide pounds by 2.2 to estimate kilograms. This shortcut is useful on the go, but for medical, fitness, shipping, and technical use, the full conversion factor gives better accuracy.
Pounds are common in the United States, while kilograms are the global metric standard used in healthcare, science, and most countries. You will use lbs to kg conversion for body weight tracking, gym programming, nutrition plans, airline baggage limits, parcel shipping, and international product specifications. It is also helpful when reading US-based content while living in a metric country.
1 pound equals 0.453592 kilograms (more precisely 0.45359237). This means a pound is a little less than half a kilogram. To convert lbs to kg, multiply by 0.453592.
1 kilogram equals 2.20462 pounds. This is the inverse conversion and is useful when you need to convert metric body weight or luggage limits into pounds.
180 lbs is 81.65 kg (180 × 0.453592 = 81.64656, rounded to two decimals). This is a common conversion for fitness and health tracking.
Yes. 100 kg equals 220.46 lbs, so 220 lbs is very close to 99.79 kg. In practical use, people often treat 220 lbs as about 100 kg.
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