Template:SI special units

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Named units derived from SI base units

Name	Symbol	Quantity	Expression in terms of other units	Expression in terms of SI base units
hertz	Hz	frequency	1/s	s−1
newton	N	force, weight	m∙kg/s2	m∙kg∙s−2
pascal	Pa	pressure, stress	N/m2	m−1∙kg∙s−2
joule	J	energy, work, heat	N∙m = C·V = W·s	m2∙kg∙s−2
watt	W	power, radiant flux	J/s = V·A	m2∙kg∙s−3
coulomb	C	electric charge or electric flux	s∙A	s∙A
volt	V	voltage, electrical potential difference, electromotive force	W/A = J/C	m2∙kg∙s−3∙A−1
farad	F	electric capacitance	C/V	m−2∙kg−1∙s4∙A2
ohm	Ω	electric resistance, impedance, reactance	V/A	m2∙kg∙s−3∙A−2
siemens	S	electrical conductance	1/Ω	m−2∙kg−1∙s3∙A2
weber	Wb	magnetic flux	J/A	m2∙kg∙s−2∙A−1
tesla	T	magnetic field	V∙s/m2 = Wb/m2 = N/(A∙m)	kg∙s−2∙A−1
henry	H	inductance	V∙s/A = Wb/A	m2∙kg∙s−2∙A−2
Celsius	°C	Celsius Temperature	t°C = tK − 273.15	K
lumen	lm	luminous flux	cd∙sr	cd
lux	lx	illuminance	lm/m2	m−2∙cd
becquerel	Bq	radioactivity (decays per unit time)	1/s	s−1
gray	Gy	absorbed dose (of ionizing radiation)	J/kg	m2∙s−2
sievert	Sv	equivalent dose (of ionizing radiation)	J/kg	m2∙s−2
katal	kat	catalytic activity	mol/s	s−1∙mol