basic

Toroid Inductance from Core Dimensions Calculator

L = μ₀μᵣN²A/(2πr) — toroidal coil inductance.

Calculates inductance of a toroidal coil: L = μ₀·μᵣ·N²·A / (2πr_mean), where N is number of turns, A is cross-sectional area, and r_mean is mean radius. μ₀ = 4π×10⁻⁷ H/m.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

m²
m

Results

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  3. Hover any result row for the underlying formula and intermediate values.

Formula

L = μ₀μᵣN²A / (2πr̄)

In depth

Calculates inductance of a toroidal coil: L = μ₀·μᵣ·N²·A / (2πr_mean), where N is number of turns, A is cross-sectional area, and r_mean is mean radius. μ₀ = 4π×10⁻⁷ H/m.