The MKS system of units is the precursor metric system of the contemporary International System of Units, which is commonly referred to as SI, from the French Le Systeme Internationale d'Unites. The initials MKS stand for meter, kilogram and second, which are three fundamental units of measurement.
The predecessor of the MKS system was the CGS system, which stands for centimeter, gram and second. The MKS system supplanted it largely due to better scalability of its units. During the 20th century, the MKS system found more use commercially than the CGS system. By the 10th General Conference on Weights and Measures in 1954, the MKS system had widespread use. It formed the blueprint of the modern SI metric system, which is the most widely used measurement system in the world.