SI

The International System of Units (abbreviated SI from the French phrase, Système International d'Unités) is the most widely used system of units. It is the most common system for everyday commerce in the world, and is almost universally used in the realm of science.

See also

• Units of measurement
• Weights and measures
• Mesures usuelles
• Metrified English unit
• History of measurement
• Other systems of measurement:
• Imperial units
• U.S. customary units
• Metre-tonne-second system of units
• Chinese system of units
• Planck units
• Atomic units
• Geometrized units
• CODATA
• Metrication
• Metric system in the United States
• Metrology
• UTC (Coordinated Universal Time)
• Binary Prefixes - used to quantify large amounts of computer data
• Orders of magnitude
• ISO 31