What is the basic unit of mass in the metric system?

The basic unit of mass in the metric system is the kilogram. The kilogram is the primary unit from which other mass units are derived, such as grams. It is defined based on the International System of Units (SI) and is used universally in scientific contexts. One kilogram is equal to 1,000 grams, making it a central figure in measuring mass within the metric system.

While other units like grams, pounds, and ounces are also used to measure mass, they are not classified as the basic unit in this system. Grams are a subunit of kilograms, and pounds and ounces belong to the imperial system, which is separate from the metric system. This distinction reinforces the kilogram’s role as the foundational unit in metrics, ensuring consistency in scientific measurement globally.