Air core coil inductance


Online calculator for determining the inductance of an air-core coil. Enter a value for the diameter of the coil, its length, and the number of turns to get the desired result.

Calculator of air rod coil inductance

Outer diameter
mm
Inner diameter
mm
Number of turns

Formula:

Air Core Flat Spiral Inductance = ( ( (4.921)*N2(d1+d2)2 ) / (15d1-7d2) ) * dimension

  • N = number of turns
  • d1=outer diameter
  • d2=inner diameter

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