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Single Layer Air Coil Inductance Calculator

For Use In Building Loading Coils For Mobileering On H.F.

d = Coil diameter (in), n = Number of turns, l = Coil length (in)



Low - High

Coil Diameter (d)

Number of turns (n)

Coil Length (l)






Estimated Wire Turns:

(per inch)
(per cm) 



1) For 10 ~ 40 meter band you want inductance between 40 uH to 45 uH. For 10 ~ 80 meters you should have an inductor of 75uH to 85 uH
2) This calculator will get you close and is not intended as a final formula

 Dennis Viereck

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