The International System of Units (SI) uses pounds as a unit of mass

Explanation

SI specifies certain units for various types of quantities, based on seven fundamental units, which are one of the seven basic units of SI used in science for various quantities.

For example,

• The meter (m) is the SI unit of length. It is a little longer than a yard.
• The SI unit of mass is the kilogram (kg), which is about 2.2 pounds (lb).
• The SI unit of time is the second (s).