maratoolHow to convert gilberts to ampere-turns (MMF)
Type an MMF — read ampere-turns, kAt, or gilberts instantly.
Magnetomotive force drives flux around a magnetic circuit the way voltage drives current. The MMF Converter bridges SI ampere-turns and CGS gilberts exactly.
How it works
- Pick units — "Gilbert (Gb)" to "Ampere-turn (At)", or any other pair.
- Type a value — the result updates as you type, with swap and copy.
- Copy — one click, with "Copied!" feedback.
Magnetomotive force conversion factors
Every unit converts through the ampere-turn (the base unit). To convert A → B, multiply by A's factor and divide by B's:
| Unit | = this many ampere-turns |
|---|---|
| Kiloampere-turn (kAt) | 1,000 |
| Ampere-turn (At) | 1 |
| Milliampere-turn (mAt) | 0.001 |
| Gilbert (Gb) | 0.795774715459 |
| Kilogilbert (kGb) | 795.774715459477 |
When you need it
In magnetic-circuit design, MMF = N × I and flux = MMF/reluctance — the magnetic Ohm’s law. Vintage relay datasheets quoting 500 Gb need 398 At: wind 398 turns at 1 A or 796 turns at 0.5 A.
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
- How to convert oersted to A/m (magnetic field strength)
- How to convert weber to maxwell (magnetic flux)
- How to convert milliamps to amps (and other current units)
Or browse everything at once in the new unit & sizing converters roundup.