What is the SI system of measurement characterized as?

The SI system, or the International System of Units, is characterized as a decimal system of measures and weights. This means that it is based on powers of ten, which simplifies calculations and conversions between different units. For instance, in the SI system, lengths can be expressed in meters (base unit), with larger or smaller quantities easily represented in kilometers (10^3 meters) or millimeters (10^-3 meters) respectively. This straightforward metric approach facilitates scalability and precision in measurements across various scientific, engineering, and commercial applications.

The decimal nature of the SI system allows for quick conversions and a universal understanding of quantities, making it preferable for standardization in global communication of scientific and technical data. This characteristic of being decimal sets it apart from other systems of measurement, like binary, which relies on base two, or fractional systems that involve divisions into smaller parts, and logarithmic systems which utilize logarithm functions for calculation purposes.