Magnetomotive Force Converter — Ampere-Turns & Gilberts

Convert magnetomotive force between ampere-turns, kiloampere-turns, and gilberts.

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How this conversion works. MMF is converted through the ampere-turn; the gilbert uses the exact 10/4π relation given in NIST Special Publication 811.

How to use

  1. Choose the units to convert from and to.
  2. Enter a value — the converted result updates instantly.
  3. Click Copy to copy the result to your clipboard.

Frequently asked questions

How do I convert gilbert to ampere-turn?

1 gilbert = 0.795775 ampere-turn. Choose "Gilbert (Gb)" as From and "Ampere-turn (At)" as To, type a value, and the result updates instantly.

What is an ampere-turn?

The MMF of one ampere flowing through one coil turn. A 200-turn coil carrying 0.5 A produces 100 At — turns multiply the current’s magnetizing effect.

Why is the gilbert slightly smaller than the ampere-turn?

The CGS definition absorbs 4π: 1 Gb = 10/(4π) ≈ 0.79577 At. Old speaker and relay specs in gilberts convert with that exact ratio.

Is my data sent to a server?

No. Conversions run entirely in your browser using fixed factors — nothing is uploaded or logged.

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