Processing math: 100%

The SI units

Basic units

QuantityUnitSymbol
Length metre m
Mass kilogram kg
Time second s
Therm. temp. kelvin K
Electr. current ampere A
Luminous intens.candela cd
Amount of subst.mol mol

Extra units

QuantityUnitSymbol
Plane angle radian rad
solid angle sterradiansr

Derived units with special names

QuantityUnitSymbolDerivation
Frequency hertz Hz s1
Force newton N kgms2
Pressure pascal Pa Nm2
Energy joule J Nm
Power watt W Js1
Charge coulomb C As
El.\ Potential volt V WA1
El.\ Capacitance farad F CV1
El.\ Resistance ohm ΩVA1
El.\ Conductance siemens S AV1
Mag.\ flux weber Wb Vs
Mag.\ flux density tesla T Wbm2
Inductance henry H WbA1
Luminous flux lumen lm cdsr
Illuminance lux lx lmm2
Activity bequerelBq s1
Absorbed dose gray Gy Jkg1
Dose equivalent sievert Sv Jkg1

Prefixes

quettaQ1030
ronnaR1027
yottaY1024
zettaZ1021
exa E1018
peta P1015
tera T1012
giga G109
mega M106
kilo k103
hectoh102
deca d10
deci d101
centic102
millim103
microμ106
nano n109
pico p1012
femtof1015
atto a1018
zeptoz1021
yoctoy1024
rontor1027
quectoq1030