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Ferrite magnetic ring online calculator

Ferrite is a metal oxide with ferromagnetism. In terms of electrical properties, ferrite has a much higher electrical resistivity than metal and alloy magnetic materials, and has a higher dielectric property. The magnetic properties of ferrite also exhibit high magnetic permeability at high frequencies. Therefore, ferrite has become a non-metallic magnetic material widely used in the field of high frequency and low voltage.

The following calculator is a ferrite magnetic ring online calculator for the calculation of the number of turns of the ferrite magnetic ring inductance value.

Ferrite magnetic loop inductor and turns online calculator

The amount of inductance you want[mH]  
(ferrite) ferrite core size model  
please choose→material  
µ = magnetic flux

This calculator is calculated with reference to Amidon's products, and other companies' products can be calculated using this calculator reference.

Actual inductance value [mH]  
Number of turns[1]  
Ring diameter [mm]  
AL inductance [mH/1000 laps]  

Precise calculation:

Ferrite magnetic ring model: (Amidon Company)

Model Ferrite ferrite Shape Outer diameter The inside diameter of Height AL Value
FT-23-43 Ferrite toroidal core   4 .230 .120 .060 188
FT-23-61 Ferrite toroidal core   4 .230 .120 .060 24.8
FT-23-77 Ferrite toroidal core   4 .230 .120 .060 356
FT-37-43 Ferrite toroidal core   4 .375 .187 .125 420
FT-37-61 Ferrite toroidal core   4 .375 .187 .125 55.3
FT-37-67 Ferrite toroidal core   4 .375 .187 .125 17.7
FT-50-43 Ferrite toroidal core   3 .500 .281 .188 523
FT-50A-43 Ferrite toroidal core   3 .500 .281 .188 570
FT-50B-43 Ferrite toroidal core   3 .500 .281 .188 1140
FT-50-61 Ferrite toroidal core   3 .500 .281 .188 68
FT-50-J Ferrite toroidal core   3 .500 .281 .188 2710
FT-82-43 Ferrite toroidal core   3 .825 .520 .250 557
FT-82-61 Ferrite toroidal core   3 .825 .520 .250 73.3
FT-82-77 Ferrite toroidal core   3 .825 .520 .250 1060
FT-114-43 Ferrite toroidal core   1 1.142 .750 .295 603
FT-114-61 Ferrite toroidal core   1 1.142 .750 .295 79.3
FT-193A-F Ferrite toroidal core   1 1.932 1.250 .750 4460
FT-240-43 Ferrite toroidal core   1 2.400 1.400 .500 1240
FT-240-61 Ferrite toroidal core   1 2.400 1.400 .500 173
FT-240-77 Ferrite toroidal core   1 2.400 1.400 .500 3130
FT-240-K Ferrite toroidal core   1 2.400 1.400 .500