Ampere per Metre (A/m)
The ampere per metre is the SI unit of magnetic field strength (H). A long coil with n turns per metre carrying I amperes has H = nI inside.
Symbol: A/m
Quantity: magnetic field strength (H field) and coercivity
SI relation: A/m is the coherent SI unit of magnetic field strength.
Derivation: The SI unit of magnetic field strength H
Exact: yes, by definition
Typical uses
- Coil and solenoid design
- Coercivity of magnetic materials
- Magnetic particle and eddy-current testing
Convert amperes per metre to other units
| Conversion | 1 A/m equals | Reverse |
|---|---|---|
| ampere per metre to oersted | 0.01256637061 Oe | oersted to ampere per metre |
| ampere per metre to kiloampere per metre | 0.001 kA/m | kiloampere per metre to ampere per metre |
| ampere per metre to kilooersted | 0.00001256637061 kOe | kilooersted to ampere per metre |
| ampere per metre to ampere per centimetre | 0.01 A/cm | ampere per centimetre to ampere per metre |
Open the Magnetic Field Strength Converter to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Ampere per Metre (A/m). Retrieved October 25, 2026, from https://scientificconverters.com/units/ampere-per-meter/
IEEE
Scientific Converters, "Ampere per Metre (A/m)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/ampere-per-meter/