Quantity 
Unit 
Expression 


Name 
Symbol 
In other SI units 
In terms of SI base units 
Plane angle 
radian 
rad 

m.m^{1} 
Solid angle 
steradian 
sr 

m^{2}.m^{2} 
Frequency 
hertz 
Hz 

s^{1} 
Force 
newton 
N 

m.kg.s^{2} 
Pressure, stress 
pascal 
Pa 
N.m^{2} 
m^{1}.kg.s^{2} 
Energy, work; quantity of heat 
joule 
J 
N.m 
m^{2}.kg.s^{2} 
Power^{(1)}, radiant flux 
watt 
W 
J.s^{1} 
m^{2}.kg.s^{3} 
Quantity of electricity, electric charge 
coulomb 
C 

s.A 
Electric potential, potential difference, electromotive force 
volt 
V 
W.A^{1} 
m^{2}.kg.s^{3}.A^{1} 
Electric resistance 
ohm 
Ω 
V.A^{1} 
m^{2}.kg.s^{3}.A^{2} 
Conductance 
siemens 
S 
A.V^{1} 
m^{2}.kg^{1}.s^{3}.A^{2} 
Capacitance 
farad 
F 
C.V^{1} 
m^{2}.kg^{1}.s^{4}.A^{2} 
Magnetic flux 
weber 
Wb 
V.s 
m^{2}.kg.s^{2}.A^{1} 
Magnetic flux density 
tesla 
T 
Wb.m^{2} 
kg.s^{2}.A^{1} 
Inductance 
henry 
H 
Wb.A^{1} 
m^{2}.kg.s^{2}.A^{2} 
Luminous flux 
lumen 
lm 
cd.sr 
cd 
Illuminance 
lux 
lx 
lm.m^{2} 
m^{2}.cd 
Activity (of a radionuclide) 
becquerel 
Bq 

s^{1} 
Absorbed dose, specific energy imparted, kerma, absorbed dose index 
gray 
Gy 
J.kg^{1} 
m^{2}.s^{2} 
Dose equivalent 
sievert 
Sv 
J.kg^{1} 
m^{2}.s^{2} 
Catalytic activity 
katal 
kat 

mol.s^{1} 
Units derived from SI base units may be expressed in terms of the units listed in this annex.
In particular, derived SI units may be expressed by the special names and symbols given in the above table. For example, the SI unit of dynamic viscosity may be expressed as m^{1}.kg.s^{1} or N.s.m^{2} or Pa.s.