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Most equations I have seen are a little something like this.

p=permeability

I=current

N=Number of turns

L=length of turn

The ones I have seen are PxNxI/L.

That goes for a solenoid mainly. The length of the coil I will make, if it were to be a disk, would be the Thickness of the wire times the number of turns, its width would have nothing relevant enough do with the calculation I would assume. After I find the turn density, what do I do? It is going to be a really weird magnet.