1. Meter (m): Unit of length
2. Kilogram (kg): Unit of mass
3. Second (s): Unit of time
4. Ampere (A): Unit of electric current
5. Kelvin (K): Unit of thermodynamic temperature
6. Mole (mol): Unit of amount of substance
7. Candela (cd): Unit of luminous intensity
These seven units form the foundation for all other SI units, which are derived from these base units.