The International System of Units (SI)
Description
SI Base Units
SI Derived Units with Special Names and Symbols
Examples
The International System of Units (SI) has the meter, kilogram, second, ampere, kelvin, mole, and candela as its base units.
When used in conjunction with the UseSystem command, the SI system sets the following units for the given dimensions.
Dimension Name
Unit Name
length
meter
mass
kilogram
time
second
force
newton
pressure
pascal
energy
joule
power
watt
electric capacitance
farad
electric charge
coulomb
electric conductance
siemens
magnetic inductance
henry
electric potential
volt
electric resistance
ohm
illuminance
lux
luminous flux
lumen
magnetic flux
weber
magnetic flux density
tesla
plane angle
radian
solid angle
steradian
Unit Symbol
m
kg
s
electric current
ampere
A
thermodynamic temperature
kelvin
K
amount of substance
mole
mol
luminous intensity
candela
cd
Symbol
In Terms of
Other SI Units
angle, plane
rad
1 = m/m(radius)
angle, solid
sr
1 = m^2/m(radius)^2
Celsius temperature
degree[Celsius]
degC
F
C/V
C
A*s
S
A/V
electric inductance
H
Wb/A
V
W/A
Omega
V/A
energy (work)
J
N*m
N
kg*m/s^2
lx
lm/m^2
lm
cd*sr
Wb
V*s
T
Wb/m^2
W
J/s
pressure (stress)
Pa
N/m^2
Notes:
To enter a unit in 2-D Math input, select the unit from the appropriate Units palette. If the unit you want is not there, select unit and then enter the unit.
When you edit a unit, double brackets appear around it.
withUnitsStandard:
UnitsUseSystemSI
5Unittonnefts
5tfts
combine,units
1524kgms
Unith
127300N
Unitcm2
127003Pa
See Also
Units
Units/Index
Units/Standard
Units/Systems
Units[UseSystem]
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