Quick reference table
Common magnetic field strength conversions
| From | To |
|---|---|
| 1 Oe | 79.57747155 A/m |
| 1 A/m | 0.01256637061 Oe |
| 1 kA/m | 1,000 A/m |
| 1 A/cm | 100 A/m |
How to convert magnetic field strength
Magnetic field strength (H) is measured in amperes per meter in the SI system and in oersted in the older CGS system.
Every magnetic field strength unit is a fixed multiple of one base unit, the A/m. To convert a value, multiply it by the size of the starting unit and divide by the size of the target unit. For example, to convert Oe to A/m, multiply by 79.57747155. To go the other way, divide by 79.57747155.
The converter above does this for you and shows the exact formula under the result.
Worked examples
Oersted to Amperes per meter
| Oersted (Oe) | Amperes per meter (A/m) |
|---|---|
| 1 Oe | 79.57747155 A/m |
| 2 Oe | 159.1549431 A/m |
| 5 Oe | 397.8873577 A/m |
| 10 Oe | 795.7747155 A/m |
| 25 Oe | 1,989.436789 A/m |
| 50 Oe | 3,978.873577 A/m |
| 100 Oe | 7,957.747155 A/m |
| 1,000 Oe | 79,577.47155 A/m |
Amperes per meter to Oersted
| Amperes per meter (A/m) | Oersted (Oe) |
|---|---|
| 1 A/m | 0.01256637061 Oe |
| 2 A/m | 0.02513274123 Oe |
| 5 A/m | 0.06283185307 Oe |
| 10 A/m | 0.1256637061 Oe |
| 25 A/m | 0.3141592654 Oe |
| 50 A/m | 0.6283185307 Oe |
| 100 A/m | 1.256637061 Oe |
| 1,000 A/m | 12.56637061 Oe |
Magnetic field strength units explained
| Unit | Symbol | Equals |
|---|---|---|
| Amperes per meter | A/m | 1 A/m = 1 A/m |
| Kiloamperes per meter | kA/m | 1 kA/m = 1,000 A/m |
| Amperes per centimeter | A/cm | 1 A/cm = 100 A/m |
| Ampere-turns per meter | At/m | 1 At/m = 1 A/m |
| Oersted | Oe | 1 Oe = 79.5774715459 A/m |
Popular conversions: oersted to a/m.
Frequently asked questions
How many A/m is 1 oersted?
One oersted is 1000/(4π) A/m, which is about 79.577 A/m.
How do I convert Oe to A/m?
Multiply the value in Oe by 79.57747155 to get A/m. For example, 10 Oe = 795.7747155 A/m.
How many A/m is 1 Oe?
1 Oe = 79.57747155 A/m, and 1 A/m = 0.01256637061 Oe.
Does this magnetic field strength converter work offline?
Yes. After the page has loaded once, all calculations run in your browser, so it keeps working without an internet connection.