Unit name	Unit symbol	Quantity name	Quantity symbol	Dimension symbol
metre	m	length	l (a lowercase L), x, r	L
kilogram	kg	mass	m	M
second	s	time	t	T
ampere	A	electric current	I (an uppercase i)	I
kelvin	K	thermodynamic temperature	T	Θ
candela	cd	luminous intensity	Iv (an uppercase i with lowercase non-italicized v subscript)	J
mole	mol	amount of substance	n	N