Convert Amperes per metre to Amperes per inch
Convert Amperes per metre (A/m) to Amperes per inch (A/in) instantly and accurately.
Conversion Formula
A/in = A/m × 0.0254
About Amperes per metre
The ampere per metre (A/m) is the SI coherent unit of magnetic field strength H, expressing the magnetomotive force per unit length. It defines how strongly a field drives magnetic flux through a material. Earth's geomagnetic H field is approximately 40-60 A/m; a typical transformer core operates at 100-1000 A/m. 1 A/m = 1 A m⁻¹.
About Amperes per inch
The ampere per inch (A/in) equals 1/0.0254 A/m ≈ 39.370 A/m. Standard unit in US magnetic core and inductor datasheets from manufacturers like Magnetics Inc. and Ferroxcube; B-H curves and core loss specifications for powder cores and ferrites are commonly plotted in Oe (H-axis) or A/in in North American catalogs. 1 A/in = 1/0.0254 A/m ≈ 39.37 A/m.
Quick Reference Table
| Amperes per metre (A/m) | Amperes per inch (A/in) |
|---|---|
| 1 A/m | 0.0254 A/in |
| 2 A/m | 0.0508 A/in |
| 5 A/m | 0.127 A/in |
| 10 A/m | 0.254 A/in |
| 25 A/m | 0.635 A/in |
| 50 A/m | 1.27 A/in |
| 100 A/m | 2.54 A/in |