*Assuming path length of 1 cm
Formula to Convert Oersted to Gilbert
Converting Oersted (Magnetic Field Strength) to Gilbert (Magnetomotive Force) requires defining a path length, as $H = \text{MMF} / \text{Length}$.
In the CGS system, the standard assumption for this direct conversion is a path length of 1 centimeter.
$$1 \text{ Oe} \times 1 \text{ cm} = 1 \text{ Gb}$$
Example
Calculate the MMF across a 1 cm gap with a field strength of 50 Oersted:
$$50 \text{ Oe} \times 1 \text{ cm} = 50 \text{ Gb}$$
Conversion Table (over 1 cm)
| Oersted (Oe) | Gilbert (Gb) |
|---|---|
| 1 Oe | 1 Gb |
| 10 Oe | 10 Gb |
| 100 Oe | 100 Gb |
| 500 Oe | 500 Gb |
About the Units
The **Oersted** measures the intensity of the magnetic field. The **Gilbert** measures the "pressure" (Magnetomotive Force) driving the magnetic flux. They are numerically identical in a vacuum over a distance of 1 centimeter.