The SI base unit of mass is the kilogram, often known as the kilogram (symbol: kg). One-thousandth of a kilogram is referred to as a gram. Unit conversion describes the corresponding mass units in various systems.
In several different systems, including English units, Imperial units, and the United States customary units, the pound (abbreviation: lb) is a unit of mass or weight. Systems might differ in their sizes. The international avoirdupois pound is currently the most widely used.
Therefore, you may easily convert units like 80 kg to lbs.