Systems of Measurement

Systems used to define and standardize units for measuring physical quantities such as length, mass, volume, area, and temperature.

Articles with this tag: 3 Updated: August 7, 2026

Articles with this tag

International System of Units (SI): overview, base units, and uses International System of Units The International System of Units (SI) is the modern metric standard of measurement. This article explains its seven base units, derived units, history, global adoption, and everyd…

Metric system A decimal, coherent system of measurement that originated in France and evolved into the International System of Units (SI); used worldwide in science, industry and commerce.

United States customary units Overview of the U.S. customary system: its principal length, area, volume, mass and temperature units, history of use and metrication, practical applications, and key differences f…