Magnets vs mathematics?

Question

to understand and accurately predict electromagnetic fields - what level of math would best suit me?

Answer 1

Any early calculus courses should be more than enough.  All you really need to know are integrals.  Integrals are useful when calculating the E-fields of wires, coils, and other non-point conductors/magnets.  There are many equations that have been derived to bypass the calculus so you could probably get by with knowing your algebra.