maratoolHow to convert oersted to A/m (magnetic field strength)
Type a field strength — read A/m, kA/m, or oersteds instantly.
Magnet datasheets quote coercivity in oersteds (CGS) or kA/m (SI) depending on origin. The Magnetic Field Strength Converter applies the exact 1000/4π bridge between them.
How it works
- Pick units — "Oersted (Oe)" to "Ampere per meter (A/m)", or any other pair.
- Type a value — the result updates as you type, with swap and copy.
- Copy — one click, with "Copied!" feedback.
Magnetic field strength conversion factors
Every unit converts through the ampere per meter (the base unit). To convert A → B, multiply by A's factor and divide by B's:
| Unit | = this many ampere per meters |
|---|---|
| Kiloampere per meter (kA/m) | 1,000 |
| Ampere per meter (A/m) | 1 |
| Ampere per centimeter (A/cm) | 100 |
| Kilooersted (kOe) | 79,577.47154594767 |
| Oersted (Oe) | 79.577471545948 |
| Millioersted (mOe) | 0.079577471546 |
When you need it
A ferrite magnet’s coercivity of ~3 kOe is 238.7 kA/m; NdFeB grades exceed 12 kOe (955 kA/m). If your two datasheets disagree by a factor near 79.6, one is in Oe and the other in A/m.
Sources & methodology
Conversion factors follow NIST Special Publication 811; exact-by-definition factors are marked in the tool itself. All math runs client-side in your browser — nothing is uploaded.
More conversion guides
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- How to convert weber to maxwell (magnetic flux)
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