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To convert pounds to kilograms, divide by 2.20462, or multiply by 0.453592. So 150 lbs ÷ 2.20462 = 68.04 kg. A quick mental estimate: subtract 10%, then halve the result (e.g. 200 lbs → 180 → 90 kg, close to 90.7 kg).
Most countries use kilograms for body weight, medicine dosing, and food labeling. When an American visits a European doctor, the medical record will use kg. Online European recipes list butter, flour, and meat in grams and kilograms rather than pounds and ounces.
Did you know? The United States, Liberia, and Myanmar are the only countries that have not officially adopted the metric system — making lbs-to-kg one of the most searched conversions in the world.
International travel frequently requires this conversion — from checking luggage weight limits to understanding local market produce prices. European fitness apps, medical scales, and nutrition labels all use kilograms, making this conversion essential for anyone moving between systems.