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Convert Pound to Kilogram

Converting from lb to kg

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Information:

  • The SI base unit for mass is the kilogram (kg).
  • 1 pound (lb) = 0.45359237 kilograms exactly.
  • 1 ounce (oz) = 1/16 of a pound.
  • 1 stone (st) = 14 pounds.
Convert Kilogram (kg) to Pound (lb) instead
Conversion Details & Formula

Formula:

Result (kg) = Input Value (lb) × 0.4535924

The conversion factor is derived from SI base unit conversions: (0.4535924 / 1)

Unit Relationship:

  • 1 lb (Pound) = 0.4535924 kg (Kilogram)
  • 1 kg (Kilogram) = 2.2046226 lb (Pound)

Equivalence to SI Base Unit (kg):

  • 1 lb (Pound) = 0.4535924 kg
  • 1 kg (Kilogram) = 1 kg