Friday, October 12th, 2018

Magnetic Units and Conversion Factors

Last updated on Sunday, November 24th, 2019

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In this table, basic physical quantities that are used in magnetic materials are included. The symbol and conversion from one magnetic unit to the other.

This conversion will be helpful in numerical problems.

Quantity	Symbol	SI Unit	CGS emu Unit	Conversion	Remarks
Magnetic Induction or Magnetic field density	B	Tesla (Wb/m²)	Gauss	1 Wb/m²=10⁴ Gauss
Magnetic field intensity	H	Amp-turn/m	Oersted	1 Amp-turn/m=4π × 10^-7H/m= 1 emu
Magnetization	M	Amp-turn/m	Maxwell/cm²	1 Amp-turn/m=10^-3Max/cm²
Permeability of a vacuum	$\fn_jvn \mu_{0}$	Henry/m	emu	4π×10^-7 H/m=1 emu
Relative permeability	$\fn_jvn \mu_{r}$	unitless	unitless	$\fn_jvn \mu_{r}$ (SI =CGS)
Magnetic Susceptibility	χ	Unitless	Unitless	χ=4π (χ in CGS)