Please provide values below to convert Pounds to Kilograms
Pounds
Definition
A pound (symbol: lb) is a unit of mass or weight in the imperial and US customary systems. One pound is defined as exactly 0.45359237 kilograms.
History/Origin
The pound derives from the Roman libra (hence the abbreviation 'lb'). Various definitions of the pound were used throughout history until it was standardized internationally in 1959.
Current Use
The pound remains the primary unit of weight in the United States and is commonly used in the United Kingdom alongside metric units. It is widely used in commerce, cooking, and personal weight measurements.
Kilograms
Definition
A kilogram (symbol: kg) is the base unit of mass in the International System of Units (SI). Since 2019, it has been defined by fixing the numerical value of the Planck constant.
History/Origin
Originally defined in 1795 as the mass of one cubic decimeter of water at 4°C, the kilogram was later standardized as the mass of the International Prototype Kilogram (IPK). In 2019, it was redefined using fundamental physical constants.
Current Use
The kilogram is the standard unit of mass in most countries worldwide. It is used in commerce, science, industry, and everyday measurements. It forms the basis for many other units of mass and weight in the metric system.