Royal Society of Chemistry

Table 1.10

SI-derived units with special names and symbols.

Name of unit	Symbol	Expressed in terms of other SI units	Related quantity	Symbol
bequerel	Bq	s⁻¹	activity of a radionuclide	A
coulomb	C	A s	electric charge	Q
degree Celsius	°C	K	Celsius temperature	t
farad	F	C V⁻¹	capacitance	C
henry	H	Wb A⁻¹	inductance	L
hertz	Hz	s⁻¹	frequency of a periodic phenomenon	f, ν
gray	Gy	J kg⁻¹	absorbed dose	D
joule	J	N m	energy, work, amount of heat	E, W, Q
katal	kat	mol s⁻¹	catalytic activity	z_E
lumen	lm	cd sr	luminous flux	Φ_v
lux	lx	lm m⁻²	illuminance	E_v
newton	N	m kg s⁻²	force	F
ohm	Ω	V A⁻¹	electric resistance	R
pascal	Pa	N m⁻²	pressure, stress	p
radian	rad	1	plane angle	α, β, γ, ⋯
steradian	sr	1	solid angle	Ω
siemens	S	Ω⁻¹	electric conductance	G
sievert	Sv	J kg⁻¹	dose equivalent	H
tesla	T	Wb m⁻²	magnetic flux density, magnetic induction	B
volt	V	W A⁻¹	electric potential difference	U
watt	W	J s⁻¹	power, radiant flux	P
weber	Wb	V s	magnetic flux	Φ

Name of unit	Symbol	Expressed in terms of other SI units	Related quantity	Symbol
bequerel	Bq	s⁻¹	activity of a radionuclide	A
coulomb	C	A s	electric charge	Q
degree Celsius	°C	K	Celsius temperature	t
farad	F	C V⁻¹	capacitance	C
henry	H	Wb A⁻¹	inductance	L
hertz	Hz	s⁻¹	frequency of a periodic phenomenon	f, ν
gray	Gy	J kg⁻¹	absorbed dose	D
joule	J	N m	energy, work, amount of heat	E, W, Q
katal	kat	mol s⁻¹	catalytic activity	z_E
lumen	lm	cd sr	luminous flux	Φ_v
lux	lx	lm m⁻²	illuminance	E_v
newton	N	m kg s⁻²	force	F
ohm	Ω	V A⁻¹	electric resistance	R
pascal	Pa	N m⁻²	pressure, stress	p
radian	rad	1	plane angle	α, β, γ, ⋯
steradian	sr	1	solid angle	Ω
siemens	S	Ω⁻¹	electric conductance	G
sievert	Sv	J kg⁻¹	dose equivalent	H
tesla	T	Wb m⁻²	magnetic flux density, magnetic induction	B
volt	V	W A⁻¹	electric potential difference	U
watt	W	J s⁻¹	power, radiant flux	P
weber	Wb	V s	magnetic flux	Φ