Convert Oersteds to Megaamperes per metre
Convert Oersteds (Oe) to Megaamperes per metre (MA/m) instantly and accurately.
Conversion Formula
MA/m = Oe × 7.957747155e-5
About Oersteds
The oersted (Oe) equals exactly 1000/(4π) A/m ≈ 79.577 A/m, the CGS unit of magnetic field strength named after Hans Christian Ørsted. Still widely used in permanent magnet characterisation (NdFeB, SmCo, AlNiCo), magnetic recording, and older MRI literature. Earth's surface field is ≈ 0.5 Oe; a typical speaker magnet ≈ 5000 Oe. 1 Oe = 1000/(4π) A/m.
About Megaamperes per metre
The megaampere per metre (MA/m) equals 10⁶ A/m. High-field electromagnets for physics research (Bitter magnets, hybrid magnets) generate 40-100 T requiring MA/m fields; particle accelerator dipole magnets (LHC: 8.3 T) operate at several MA/m; saturation magnetisation of iron is ≈1.36 MA/m. 1 MA/m = 10⁶ A/m ≈ 12 566 Oe.
Quick Reference Table
| Oersteds (Oe) | Megaamperes per metre (MA/m) |
|---|---|
| 1 Oe | 7.958 × 10-5 MA/m |
| 2 Oe | 0.000159155 MA/m |
| 5 Oe | 0.000397887 MA/m |
| 10 Oe | 0.000795775 MA/m |
| 25 Oe | 0.00198944 MA/m |
| 50 Oe | 0.00397887 MA/m |
| 100 Oe | 0.00795775 MA/m |