Magnetic Field Strength Converter
Convert between 5 magnetic field strength units instantly. Enter a value, pick your units and get the result with the formula, a full conversion table and worked examples.
1 Oe in all magnetic field strength units
Updates live as you type. Click a row to set it as the target unit.
| Unit | Symbol | Value |
|---|---|---|
| Ampere per metre | A/m | 79.5775 |
| Ampere turn per metre | At/m | 79.5775 |
| Oersted | Oe | 1 |
| Ampere turn per centimetre | At/cm | 0.795775 |
| Kiloampere per metre | kA/m | 0.0795775 |
How to Convert Magnetic Field Strength Units
Magnetic field strength (H field) is the magnetising force produced by currents. The SI unit is ampere per metre (A/m); the CGS unit is the oersted, where 1 Oe ≈ 79.58 A/m.
Every unit on this page is stored as a fixed factor relative to one reference unit, the ampere per metre (A/m). Converting is a two step multiply and divide:
- Multiply your value by the factor of the source unit to get the value in A/m.
- Divide that result by the factor of the target unit.
Oersted to Ampere per metre conversion table
| Oersted (Oe) | Ampere per metre (A/m) |
|---|---|
| 1 Oe | 79.5775 A/m |
| 2 Oe | 159.155 A/m |
| 3 Oe | 238.732 A/m |
| 4 Oe | 318.31 A/m |
| 5 Oe | 397.887 A/m |
| 6 Oe | 477.465 A/m |
| 7 Oe | 557.042 A/m |
| 8 Oe | 636.62 A/m |
| 9 Oe | 716.197 A/m |
| 10 Oe | 795.775 A/m |
| 15 Oe | 1,193.66 A/m |
| 20 Oe | 1,591.55 A/m |
| 25 Oe | 1,989.44 A/m |
| 30 Oe | 2,387.32 A/m |
| 40 Oe | 3,183.1 A/m |
| 50 Oe | 3,978.87 A/m |
| 75 Oe | 5,968.31 A/m |
| 100 Oe | 7,957.75 A/m |
| 250 Oe | 19,894.4 A/m |
| 500 Oe | 39,788.7 A/m |
| 1,000 Oe | 79,577.5 A/m |
Magnetic Field Strength Units and Conversion Factors
Value of one unit expressed in A/m.
| Unit | Symbol | In A/m |
|---|---|---|
| Ampere per metre | A/m | 1 |
| Ampere turn per metre | At/m | 1 |
| Oersted | Oe | 79.57747155 |
| Ampere turn per centimetre | At/cm | 100 |
| Kiloampere per metre | kA/m | 1,000 |
Frequently Asked Questions
What is the SI unit of magnetic field strength?
The SI unit of magnetic field strength is the ampere per metre (A/m). Magnetic field strength (H field) is the magnetising force produced by currents.
How do I convert Oe to A/m?
To convert oersted (Oe) to ampere per metre (A/m), multiply the value in Oe by 79.5775. For example, 1 Oe = 79.5775 A/m.
How do I convert A/m to Oe?
To convert ampere per metre (A/m) to oersted (Oe), multiply the value in A/m by 0.0125664. For example, 1 A/m = 0.0125664 Oe.
How do I convert kA/m to Oe?
To convert kiloampere per metre (kA/m) to oersted (Oe), multiply the value in kA/m by 12.5664. For example, 1 kA/m = 12.5664 Oe.
Can I see a value in every magnetic field strength unit at once?
Yes. Enter a value and choose the source unit; the "all units" table below the converter instantly lists the equivalent in all 5 supported units. Click any row to make it the target unit.
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