Formula to Convert Oersted to A/m
The conversion between Oersted (CGS) and Ampere-turn per meter (SI) involves the constant $\pi$.
The exact relationship is:
$$1 \text{ Oe} = \frac{1000}{4\pi} \text{ A/m} \approx 79.577 \text{ A/m}$$
Example
Convert 10 Oersted to Ampere-turn per meter:
$$10 \times 79.577 = 795.77 \text{ A/m}$$
Conversion Table
| Oersted (Oe) | Ampere-turn/m (A/m) |
|---|---|
| 1 Oe | 79.58 A/m |
| 10 Oe | 795.77 A/m |
| 50 Oe | 3,978.87 A/m |
| 100 Oe | 7,957.75 A/m |
About the Units
The **Oersted (Oe)** is the CGS unit of magnetic field strength ($H$). The **Ampere-turn per meter (A/m)** is the SI unit. While $B$ (Tesla/Gauss) measures the magnetic flux density, $H$ (A/m or Oersted) measures the intensity of the magnetic field produced by a free current, independent of the material's magnetic permeability.