Calculation formulas of coil inductance - 3.8 out of 5 based on 6 votes
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Simple calculation formulas of coil inductance

Formulas and numerical methods of calculation of inductance coils, which uses Coil32, you can look in the help section of the site, namely:

Here are the simple handbook formulas for the calculation of inductances, which Coil32 does not use, but which can be useful for electronics hobbyists and students.

InductanceFormula
Straight conductor  Parallel conductors (current in one direction)
r≪w  Parallel conductors (current in opposite directions)
r≪w  Microstrip line  Coaxial line  Single-layer coil
(l > 0.8 R)  Wheeler's formula
(online calculator)  Multilayer coil
(l ≈ w)  Wheeler's formula
(online calculator)  Flat coil Wheeler's formula
(online calculator)  Conical coil Wheeler's formula
(online calculator)  LH-inductance of equivalent cylindrical coil
LP-inductance of equivalent flat coil

In all equations all dimensions are in meters, inductance in Henry.

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