The Metre-Kilogram-Second (MKS) of units is a physical system of units that expresses any given measurement using the three fundamental units of the Metre, Kilogram, and/or Second. The MKS system, widely known as the Metric System, has succeeded the CGS system. The MKS system served as the basis for the development of the International System of Units (abbreviated SI).
The MKS system of units is a physical system of measurement that uses the metre, kilogram, and second (MKS) as base units. The modern International System of Units (SI) was originally created as a formalization of the MKS system, and although the SI has been redefined several times since then and is now based entirely on fundamental physical constants, it still closely approximates the original MKS system for most practical purposes.