Convert Henries per metre to Vacuum permeabilities
Convert Henries per metre (H/m) to Vacuum permeabilities (µ₀) instantly and accurately.
Conversion Formula
µ₀ = H/m × 795774.7155
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 Vacuum permeabilities
The vacuum permeability (µ₀), also called the magnetic constant, equals 4π × 10⁻⁷ H/m ≈ 1.25664 µH/m. In the 2019 SI it is experimentally determined: µ₀ = 1.25663706212(19) × 10⁻⁶ H/m. The absolute permeability of any material is µ = µᵣ × µ₀. 1 µ₀ = 4π × 10⁻⁷ H/m.
Quick Reference Table
| Henries per metre (H/m) | Vacuum permeabilities (µ₀) |
|---|---|
| 1 H/m | 795775 µ₀ |
| 2 H/m | 1591550 µ₀ |
| 5 H/m | 3978870 µ₀ |
| 10 H/m | 7957750 µ₀ |
| 25 H/m | 19894400 µ₀ |
| 50 H/m | 39788700 µ₀ |
| 100 H/m | 79577500 µ₀ |