Coil Inductance Calculator - 66pacific.com
Use this calculator to determine the inductance of single-layer and multilayer coils.
Turns
 
Diameter
 
Length
 
Depth
 
Units:

Calculate




     Toroid-winding calculator
The inductance formula above requires units in inches.

To calculate the inductance of a single-layer, air-core coil:
1. Select the measurement units (inches or centimeters).
2. Enter the number of turns (windings).
3. Enter the coil diameter (form diameter + wire diameter - see diagram).
4. Enter the coil length (distance from first to last winding - see diagram).
5. Click Calculate.


Reference: The ARRL Handbook for Radio Communications



                                                                                                          
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