Air Core Inductor Inductance Calculator

Air Core Inductor Inductance Calculator

Calculate the inductance using: $$ L = \mu_0\,\frac{N^2\,A}{l} $$ where \( A = \pi\left(\frac{d}{2}\right)^2 \)

* Enter the number of turns \(N\), coil diameter \(d\) (mm), and coil length \(l\) (mm). Values are converted to SI units, and the result is displayed in microhenries (µH).

Step 1: Enter Parameters

e.g., 50 turns

e.g., 30 mm

e.g., 40 mm

Formula: $$ L = \mu_0\,\frac{N^2\,\pi\left(\frac{d}{2}\right)^2}{l} $$
with \( \mu_0 = 4\pi \times 10^{-7} \) H/m. (All dimensions are converted to SI units.)