Understanding SI Units
The International System of Units (SI) is the modern form of the metric system and the most widely used system of measurement globally. It consists of seven base units that define all measurements in science and everyday life.
Base SI Units
Meter (m)
Base unit of length
Kilogram (kg)
Base unit of mass
Second (s)
Base unit of time
Ampere (A)
Base unit of electric current
Kelvin (K)
Base unit of temperature
Mole (mol)
Base unit of amount of substance
Candela (cd)
Base unit of luminous intensity