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Magnetomotive Force Converter (A·t, Gilbert)

Enter a value and pick units — the conversion updates instantly.

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Show all units
  • Ampere-turn (A·t)-
  • Kiloampere-turn (kA·t)-
  • Milliampere-turn (mA·t)-
  • Gilbert (Gb)-
  • Abampere-turn (abA·t)-

How to use

  1. Type a value in “Value” and choose the units to convert from and to. The page opens on ampere-turns → gilberts.
  2. A coil’s MMF is turns × current: a 200-turn coil carrying 0.5 A gives 100 A·t.
  3. “Show all units” lists the same magnetomotive force in every unit at once.
  4. The page address keeps your value and units, so you can share the link as is.

FAQ

How many ampere-turns is one gilbert?

One gilbert is 10/(4π) A·t, about 0.7958 A·t. One ampere-turn is about 1.2566 Gb.

Is an ampere-turn the same as an ampere?

In SI the unit of magnetomotive force is simply the ampere. “Ampere-turn” makes the number of coil turns explicit; the value is the same.

What is magnetomotive force used for?

It describes what drives magnetic flux around a magnetic circuit such as an electromagnet, transformer or motor — much like voltage in an electric circuit.

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