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Electrical Units

This list presents most of the units that you will encounter in electrical engineering applications and literature.

If you know of others that should be added, please send me an e-mail.

Visit NIST for all constants, units, and uncertainties. This is their Extensive Listing of constants.

Here is a list of electrical constants.

Name (Symbol) Base Unit Unit Symbol
Angular Frequency radians/second ω
Admittance (Y) siemens S
Capacitance (C) farad F
Capacitive Reactance (XC) ohm Ω
Center Frequency (Fc) hertz Hz
Charge coulomb C
Conductance (G) [Mho symbol - RF Cafe] siemen [mho] S (Mho symbol - RF Cafe) [1/Ω]
Conductivity (σ) siemens/meter S/m
Current (I) ampere A
Dipole Moment coulomb·meter p
Electric Charge coulomb Q
Electric Flux coulomb Ψ
Electric Flux Density coulomb/meter2 D
Electric Susceptibility  1 χe
Energy (E) joule J
Frequency hertz Hz
Impedance (Z) ohm Ω
Inductance (L) henry H
Inductive Reactance (XL) ohm Ω
Joule watt·second J
Linear Current Density amperes/meter2 A
Magnetic Field tesla T
Magnetic Flux weber Φ
Magnetic Flux Linkage weber Λ
Magnetic Flux Density tesla B
Magnetic Susceptibility  1 χμ
Magnetic Vector Potential weber/meter A
Magnetization ampere/meter M
Magnetomotive Force weber Wb
Mutual Inductance henry Li,j    Mi,j
Permeability henrys/meter μ
Permittivity farads/meter ε
Phase Angle radian Φ
Phase Coefficient radian β
Potential (V) volt V
Power (P) watt W
Reluctance (R) 1/henrys 1/H
Reluctivity meters/henry ν
Resistance (R) ohm Ω
Resistivity (ρ) ohm·meter Ω*m
Resonant Frequency (Fr) hertz Hz
Surface Density of Charge coulombs/meter2 σ
Susceptance (B) siemen S
Volume Density of Charge coulombs/meter3 ρ
Volume Resistivity ohms/meter3 ρ
Wavelength meter λ

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About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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