Inductance Calculator

Calculate inductance for solenoids, toroids, and coaxial cables

Inductor Type:

Number of Turns:

Solenoid Length (cm):

Coil Radius (cm):

Relative Permeability (μᵣ):

Formulas Used

Solenoid: L = μ₀μᵣN²A/l

Toroid: L = μ₀μᵣN²h × ln(r₂/r₁) / (2π)

Coaxial: L/l = μ₀ × ln(r₂/r₁) / (2π)

💡

Help us improve!

How would you rate the Inductance Calculator?