International System of Units

 

International System of Units

The International System of Units or SI units defines standard units for measurement of all physical quantities.
In principle, any physical quantity can be expressed in terms of seven base units.

The Seven Base Units
Property	Unit	Symbol
Length	meter	m
Mass	kilogram	kg
Time	second	s
Electric Current	Ampere	A
Temperature	Kelvin	K
Amount of Substance	mole	mol
Luminous Intensity	candela	cd