Convert Oersteds to Microamperes per metre
Convert Oersteds (Oe) to Microamperes per metre (µA/m) instantly and accurately.
Conversion Formula
µA/m = Oe × 79577471.55
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 Microamperes per metre
The microampere per metre (µA/m) equals 10⁻⁶ A/m. The Earth's geomagnetic field at mid-latitudes is approximately 40-50 A/m (50 000 nT / µ₀); low-frequency EMC immunity testing of sensitive electronics involves µA/m-level ambient AC magnetic fields. 1 µA/m = 10⁻⁶ A/m = 10⁻³ mA/m.
Quick Reference Table
| Oersteds (Oe) | Microamperes per metre (µA/m) |
|---|---|
| 1 Oe | 79577500 µA/m |
| 2 Oe | 159155000 µA/m |
| 5 Oe | 397887000 µA/m |
| 10 Oe | 795775000 µA/m |
| 25 Oe | 1.989 × 109 µA/m |
| 50 Oe | 3.979 × 109 µA/m |
| 100 Oe | 7.958 × 109 µA/m |