Solenoid Magnetic Field Calculator
B = μ₀ μᵣ N I / l
How to Use This Calculator
Enter turns, length, current, and relative permeability, then calculate.
Formula
B = μ0 μr N I / l
Assumes a long solenoid with uniform internal field.
Frequently Asked Questions
Where is B measured?
At the center along the axis of a long solenoid.
Does core saturation matter?
At high B, ferromagnetic cores saturate, reducing μᵣ and B from this estimate.