Magnetic Permeability Converter
Convert between all magnetic permeability units instantly. Select your units from the dropdowns below and enter a value to see the conversion in real-time.
SI unit: henry per metre (H/m)
Conversion Formula
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About Magnetic Permeability Units
Select units above to see detailed information about them.
Common Magnetic Permeability Conversions
- 1 H/m = 106 µH/m = 103 mH/m (SI prefix conversions)
- µ0 = 4π × 10-7 H/m ≈ 1.25664 µH/m (vacuum permeability)
- 1 H/m ≈ 7.958 × 105 µ0 (expressed in units of µ0)
- Vacuum / air / most plastics: µr ≈ 1, µ ≈ 1.257 µH/m
- Paramagnetic Al: µr = 1.0000220, µ ≈ µ0 + 28 nH/m
- Silicon steel (CRGO): µr ≈ 1 000-10 000, µ ≈ 1.3-13 mH/m
- Permalloy (Ni78Fe22): µr up to ~100 000, µ up to ~126 mH/m
- Mu-metal (annealed): µr up to ~300 000, µ up to ~0.38 H/m
- Supermalloy (optimal): µr up to ~106, µ up to ~1.26 H/m