1# From https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-4-two-classes-si-units-and-si-prefixes 2#Base quantity Name Symbol 3length meter m 4mass kilogram kg 5time second s 6electric current ampere A 7thermodynamic temperature kelvin K 8amount of substance mole mol 9luminous intensity candela cd