Magnetic Field Strength Converter
Convert between amperes per meter, oersteds, ampere-turns per meter and other units of magnetic field strength (the H field).
1 ampere per meter = 0.01256637061 oersteds
Most used magnetic field strength units
Popular magnetic field strength conversions
- Oersteds to amperes per meter 1 Oe = 79.57747 A/m
- Amperes per meter to oersteds 1 A/m = 0.01256637 Oe
- Kiloamperes per meter to oersteds 1 kA/m = 12.56637 Oe
- Oersteds to kiloamperes per meter 1 Oe = 0.07957747 kA/m
What is magnetic field strength?
Magnetic field strength, the H field, describes the magnetizing force produced by electric currents, independent of the material the field passes through. Its SI unit is the ampere per meter (A/m); the CGS unit is the oersted, used on permanent-magnet datasheets for coercivity.
In empty space the H field and the magnetic flux density B are proportional: 1 oersted corresponds to 1 gauss and 1 A/m to about 1.2566 µT. Inside magnetic materials they differ, which is why the two quantities have separate units. See the magnetic flux density converter for teslas and gauss.
Magnetic field strength units from smallest to largest
Every proportional magnetic field strength unit on the site, ordered by size and expressed in amperes per meter.
- Ampere per meter 1 A/m
- Ampere-turn per inch 39.3701 A/m
- Oersted 79.5775 A/m
- Ampere per centimeter 100 A/m
- Kiloampere per meter 1,000 A/m
- Kilooersted 79,577.5 A/m
All 6 magnetic field strength units
Units
Frequently asked questions
How many A/m is 1 oersted?
1 Oe = 1000/(4π) A/m ≈ 79.577 A/m.