Convert Henries per metre to Millihenries per metre
Convert Henries per metre (H/m) to Millihenries per metre (mH/m) instantly and accurately.
Conversion Formula
mH/m = H/m × 1000
About Henries per metre
The henry per metre (H/m) is the SI coherent unit of absolute magnetic permeability, equal to 1 kg·m·s⁻²·A⁻². Only the highest-permeability alloys reach this scale: annealed Mu-metal achieves µ ≈ 0.1-0.4 H/m (µᵣ up to 300 000); Supermalloy under optimal conditions approaches µ ≈ 1 H/m (µᵣ ≈ 10⁶). 1 H/m ≈ 7.96 × 10⁵ µ₀.
About Millihenries per metre
The millihenry per metre (mH/m) equals 10⁻³ H/m ≈ 796 µ₀. The range for soft magnetic materials: grain-oriented silicon steel (CRGO) has µ ≈ 1-10 mH/m at working flux densities (µᵣ ≈ 1 000-8 000); MnZn power ferrites are 3-10 mH/m; nickel-iron alloys (Permalloy 78) reach 25-100 mH/m at low fields. 1 mH/m = 10⁻³ H/m.
Quick Reference Table
| Henries per metre (H/m) | Millihenries per metre (mH/m) |
|---|---|
| 1 H/m | 1000 mH/m |
| 2 H/m | 2000 mH/m |
| 5 H/m | 5000 mH/m |
| 10 H/m | 10000 mH/m |
| 25 H/m | 25000 mH/m |
| 50 H/m | 50000 mH/m |
| 100 H/m | 100000 mH/m |