What is being measured?
Magnetic field strength is kept separate from magnetic flux density. A universal conversion from ampere per metre to tesla is not provided.
Oersted factor is 1000/(4π), not exact finite decimal. Do not convert H to tesla without permeability.
Meaning of Oe
Oersteds uses the symbol Oe in this library and measures magnetic field strength. Under the stated reference convention, 1 Oe = approximately 79.5774715459 A/m. This equivalence changes how a known value is written. It does not increase measurement accuracy or establish whether a measurement is appropriate to a real application.
Conversion method
Multiply the value by the source factor (79.57747154594767), then divide by the target factor (1). The factor ratio expresses the same magnetic field strength measurement in the other unit.
Worked example
For a known value of 10 Oe, the reference conversion gives 795.774715459 A/m. Converting that result back gives approximately 10 Oe. This reverse check helps catch a reversed factor, but matching round-trip arithmetic alone does not independently verify a source definition.
Common reference values
| Input (Oe) | Reference equivalent (A/m) |
|---|---|
| 1 | 79.5774715459 |
| 5 | 397.88735773 |
| 10 | 795.774715459 |
| 25 | 1989.43678865 |
| 50 | 3978.8735773 |
| 100 | 7957.74715459 |
Compare one Oe with other units
| Target unit | Equivalent of 1 Oe | Definition guide |
|---|---|---|
| Amperes per meter (A/m) | 79.5774715459 | Read definition |
| Kiloamperes per meter (kA/m) | 0.0795774715459 | Read definition |
| Amperes per centimeter (A/cm) | 0.795774715459 | Read definition |
Precision and common mistakes
- Keep the source and target quantity consistent. A matching symbol is not enough to establish a compatible definition.
- Record the original measurement precision. Showing twelve significant digits in a table does not make a rounded input more precise.
- Check symbol capitalization, prefixes and any regional convention in the source. Use the displayed unit definition rather than a similarly named unit.
- Factors involving repeating fractions or π use finite numerical precision. Round the final answer to the precision justified by your input.
Use a working converter
- Magnetic field strength converter
- Oersteds to Amperes per meter converter
- Oersteds to Kiloamperes per meter converter
- Oersteds to Amperes per centimeter converter
Source and verification scope
Examples and tables are computed from the versioned unit definitions used by the linked converters. The source access dates appear below. Computandum is independent of the cited organizations; a citation does not mean that a publisher endorses this page or an actual project.