Convert Pound to Kilogram

One lb equals 0.45359237 kg. This converter allows you to easily convert between Pound and Kilogram in real time.

Formula

lb × 0.45359237 = kg

Example: 1 lb = 0.45359237 kg

What is Pound?

The pound is the basic unit of mass in the imperial and US customary systems, defined as exactly 0.45359237 kilograms. Its name derives from the Latin "libra pondo" (a pound by weight), which also gives us the abbreviation "lb." In the United States, the pound is used for nearly all everyday weight measurements, from body weight to grocery items sold by the pound. In the United Kingdom, while metrication has progressed significantly, many people still express their body weight in stones and pounds.

What is Kilogram?

The kilogram is the base unit of mass in the International System of Units (SI). Originally defined by a physical platinum-iridium prototype created in 1889, it was redefined in 2019 using the Planck constant for greater precision. It is used worldwide in everyday life, from grocery shopping to scientific research. When you step on a bathroom scale or check a food label, the measurement is typically in kilograms.