How many fundamental and supplementary units in SI?

In SI, there are seven base ( fundamental ) units and two supplementary units.

Base unit

Physical quantity Unit Symbol
Mass Kilogram kg
Length Metre m
Time Second s
Temperature Kelvin K
Electric current Ampere A
Luminous intensity Candela cd
Quantity of matter Mole mol

Supplementary units

Physical quantity Unit Symbol
Plane angle Radian rad
Solid angle Steradian sr