A coil inductance formula is based on the basic loop inductance. Inductance is the ability to store energy in a magnetic field, and coils are a common way to create inductance. Many magnetic field coupling circuits, such as chokes and transformers, take advantage of a coil’s magnetic storage properties. Use our free online coil inductance calculator below.
Inputs
Number of Turns
N
Loop Diameter
D
Wire Diameter
d
Relative Permeability
μR
Output
Inductance:
Introduction
A coil inductance formula is based upon the basic loop inductance. Inductance is the ability to store energy
in a magnetic field, and coils are a very common way to create inductance. Many magnetic field coupling
circuits, like chokes and transformers take advantage of a coil’s magnetic storage properties.
Wire Loop Inductance Description
The inductance of a wire loop is a common example of a circuit with inductance. The variables used in this
tool
are the diameter of the wire conductor and the diameter of the wire loop, number of turns, and the relative
permeability. Coil inductance is related to individual loop inductance by the square of the number of turns.
