Solenoid Inductance Calculator
L = μ₀ μᵣ N² A / l
How to Use This Calculator
Enter turns, length, diameter, and core relative permeability, then calculate.
Formula
L = μ0 μr N² A / l
- A = π(d/2)²
- Assumes a long solenoid (edge effects neglected)
Frequently Asked Questions
What μᵣ should I use?
Air ≈ 1. Ferrite cores vary widely (100–5000). Check datasheets.
Does wire gauge matter?
Gauge does not change inductance directly but affects resistance and losses.