Pounds to Kilograms Converter

Convert pounds to kilograms instantly.

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Common weight units

Pound (lb)

Definition: Pound (symbol: lb) na mass unit for imperial and US customary systems. International avoirdupois pound na exactly 0.45359237 kilograms. 16 ounces dey inside one pound, and 2,000 pounds dey inside one short ton.

History/origin: Pound trace im origin to Roman libra pondo, where the name and symbol come from. Different pound versions exist for different places and times until dem standardize avoirdupois pound internationally for 1959.

Current use: Pound na main body-weight unit for United States and dem dey use am for UK too alongside kilograms. E common for food labeling, aviation, and general commerce for places wey never fully adopt metric.

Kilogram (kg)

Definition: Kilogram na SI base unit for mass. The current definition dey tied to fixed Planck constant, no be stored metal artifact.

History/origin: Kilogram move from water-based definition to international prototype cylinder, then to constant-based standard wey labs fit reproduce.

Current use: kg dey used for body weight, groceries, shipping, luggage limits, gym weights, scientific measurements, industrial goods, medical records, and most metric commerce.