What is lb?

"lb" stands for "pound" which is a unit of measurement commonly used in the United States and some other countries to measure weight or mass. One pound is equivalent to 16 ounces or 0.45 kilograms. The symbol "lb" is derived from the Latin word "libra" which means "scale" or "balance". In the metric system, the equivalent of a pound is the kilogram, which is roughly 2.2 pounds. The abbreviation "lb" is used in various fields such as science, engineering, and commerce to indicate weight or mass.