1. Length: Measured in meters (m)

2. Mass: Measured in kilograms (kg)

3. Time: Measured in seconds (s)

4. Electric Current: Measured in amperes (A)

5. Temperature: Measured in kelvins (K)

6. Amount of Substance: Measured in moles (mol)

7. Luminous Intensity: Measured in candelas (cd)

These seven quantities are considered fundamental because they cannot be defined in terms of other physical quantities. All other physical quantities can be derived from these fundamental quantities.