Source: NIST Magnetic Units
| Symbol | Quantity | Gaussian and cgs emu | SI |
|---|---|---|---|
| Φ | magnetic flux | Mx |
Wb = V·s |
| B | magnetic flux density, magnetic induction | G |
T = Wb/m2 |
| H | magnetic field strength | Oe |
A/m |
| m | magnetic moment | erg/G = emu |
A·m2 = J/T |
Goldfarb, R. B., & Fickett, F. R. (1985). Units for magnetic properties: https://doi.org/10.6028/NBS.SP.696
Original table:
| Symbol | Quantity | Conversion from Gaussian and cgs emu to SI |
|---|---|---|
| Φ | magnetic flux | 1 Mx → 10-8 Wb = 10-8 V·s |
| B | magnetic flux density, magnetic induction | 1 G → 10-4 T = 10-4 Wb/m2 |
| H | magnetic field strength | 1 Oe → 103/(4π) A/m |
| m | magnetic moment | 1 erg/G = 1 emu → 10-3 A·m2 = 10-3 J/T |
| M | magnetization | 1 erg/(G·cm3) = 1 emu/cm3 → 103 A/m |
| M | magnetization | 1 G → 103/(4π) A/m |
| σ | mass magnetization, specific magnetization | 1 erg/(G·g) = 1 emu/g → 1 A·m2/kg |
| j | magnetic dipole moment | 1 erg/G = 1 emu → 4π × 10-10 Wb·m |
| J | magnetic polarization | 1 erg/(G·cm3) = 1 emu/cm3 → 4π × 10-4 T |
| χ | susceptibility | 1 → 4π |
| χρ | mass susceptibility | 1 cm3/g → 4π × 10-3 m3/kg |
| μ | permeability | 1 → 4π × 10-7 H/m = 4π × 10-7 Wb/(A·m) |
| w, W | energy density | 1 erg/cm3 → 10-1 J/m3 |
| N, D | demagnetizing factor | 1 → 1/(4π) |
Gaussian units are the same as cgs emu for magnetostatics; Mx = maxwell, G = gauss, Oe = oersted; Wb = weber, V = volt, s = second, T = tesla, m = meter, A = ampere, J = joule, kg = kilogram, H = henry.
Source: NIST Magnetic Units