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4.2 1 1 1 1 1 Rating 4.20 (20 Votes)

# Online calculators

## Multilayer coil inductance calculator:

The most of the similar calculators work using Wheeler's formula, which has acceptable accuracy only when calculating the "optimal coil". Also, these calculators allow calculating just a ready-made coil. This calculator allows calculating the number of windings of the multilayer coil at the design stage. Inductance is calculated by the accurate algorithm using Maxwell's equations with elliptic integrals, see more... You can select measurement units - mm or inches, and also AWG or SWG wire number - the wire diameter will be determined automatically.

##### Calculate number of turns

ENTER THE INPUT DATA:
 Select units: mm/cmmil/inch AWG → 000000000012345678910111213141516171819202122232425262728293031323334353637383940 SWG → 7/06/05/04/03/02/001234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950

 L = mHμHnH – Required inductance D – Diameter of coil-former l – Length of winding d – Diameter of wire without insulation k – Diameter of wire with insulation Automatic

RESULT:
 N = – Number of turns n = – Number of Layers c – Winding thickness Lw – Required length of wire Ω =  Ohm – DC Resistance of coil

Another calculators:

0 #1 Andrew Mathison 2015-06-09 09:31
Really useful Calculator, very clear and very easy to use. Well done and many thanks.
+1 #2 Rajesh 2015-07-21 06:02
First Thank you for great effort for creating Nice and Easy Calculator.I have one doubt that for Square former the same calculation will apply or it differs.
0 #3 Coil32 admin 2015-07-21 18:19
Quoting Rajesh:
First Thank you for great effort for creating Nice and Easy Calculator.I have one doubt that for Square former the same calculation will apply or it differs.

You have to correct and pre-calculate dimensions for rectangular or square former. You can see how to do this in General Notes of Robert Weaver's calculator:
electronbunker.ca/InductanceCalcML.html
Is the multilayer coil calculator made considering the ferrite core ur=640 or just the air core coil?
+1 #5 Coil32 admin 2017-02-05 11:32
This calculator designed only for multilayer air core coil with round form of turns.

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