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Physics reference

Physics Symbols & SI Units

Search common quantities, their conventional symbols, and the SI units supplied in the reference table.

Bounded catalog

Browse symbols

98 symbols found. Only 25 are rendered per page.

Showing up to 25 symbols per page
UE

Electric potential energy

Physical symbol

Quantity
Scalar
SI unit
Joule
FE

Electrostatic force

Physical symbol

Quantity
Functions as vector
SI unit
Newton
L

Inductance

Physical symbol

Quantity
Scalar
SI unit
Henry (H)
FB

Magnetic force

Physical symbol

Quantity
Functions as vector
SI unit
Newton
B

Magnetic Field

Physical symbol

Quantity
Scalar
SI unit
Tesla
ΦB

Magnetic flux

Physical symbol

Quantity
Vector
SI unit
Weber
N

Number of turns

Physical symbol

Quantity
Scalar
SI unit
(-) Unitless
S

Poynting vector, intensity

Physical symbol

Quantity
Functions as vector
SI unit
Watt per square meter
R, r

Resistance/ Electric resistance / internal resistance

Physical symbol

Quantity
Scalar
SI unit
Ohms (Ω)
ρ

Resistivity

Physical symbol

Quantity
Scalar
SI unit
Ohm-meter (Ω-m)
n

Turns per unit length

Physical symbol

Quantity
Scalar
SI unit
Inverse meter
V

voltage, electric potential

Physical symbol

Quantity
Scalar
SI unit
Volt
A

Area

Physical symbol

Quantity
Functions as both scalar and vector
SI unit
Square meter
θ

Angular displacement,

Physical symbol

Quantity
Functions as both scalar and vector
SI unit
Meter
φ

Angular separation, the rotational angle

Physical symbol

Quantity
Functions as both scalar and vector
SI unit
Meter
ω

Angular frequency

omega

Quantity
Scalar
SI unit
Radian per second
x, y, z

Cartesian coordinates

Physical symbol

Quantity
Scalar
SI unit
Unitless
C

Circumference

Physical symbol

Quantity
Scalar
SI unit
Meter
r, θ, z

Cylindrical coordinates

Physical symbol

Quantity
Scalar
SI unit
Meter/Radian
D

Diameter

Physical symbol

Quantity
Scalar
SI unit
Meter
s

Displacement

Physical symbol

Quantity
Vector
SI unit
Meter
f

Frequency

Physical symbol

Quantity
Scalar
SI unit
Hertz
h

Height, depth

Physical symbol

Quantity
Scalar
SI unit
Meter
T

Periodic time

Physical symbol

Quantity
Scalar
SI unit
Second
r

Radius, the radius of curvature

Physical symbol

Quantity
Functions as both scalar and vector
SI unit
Meter

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