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I hope, that this small application will help for radio-amateurs to calculate various inductors. At last version **Coil32 v9.5 **are available:

**Number of turns calculation**under given inductance**Inductance of coil calculation**under given number of turns and coil design sizes**Q-factor**of air core one-layer coil inductance estimation- Inductance of multilayer coil estimate by it
**resistance to DC** - Estimate length of wire, that necessary to wind a
**onelayer inductor** - Estimate length of wire, that necessary to wind a
**multilayer inductor** - Estimate length of wire, that necessary to wind coil on a
**ferrite ring**

In all variants, that are below, it's possible to calculate number of turns if inductance is known or inductance if number of turns is known

**RF air core inductor as single turn loop****Single layer close-winding air core solenoid**

Before calculation in initial parameters you can choose two variants:- Diameter of a core and diameter of a wire are fixed, the length of winding is in passing defined.
- Diameter of a core and length of winding are fixed, diameter of a wire is in passing defined.

**Single layer RF solenoid with winding pitch****Single layer RF solenoid with pitch, but noncircular windings****Multilayer air core inductor**

Before calculation in initial parameters you can choose two variants:- Length, thickness of winding and diameter of wire are known. Number of turns is calculated, the thickness of the coil, its ohmic resistance to a DC and approximate length of a wire for winding (how much it is necessary to cut off) is in passing estimated.
- Diameter of a core, length of winding and limiting ohmic resistance of the coil are known. The number of turns is calculated, a thickness of the coil, the necessary minimum diameter of a wire and approximate length of a wire for winding is in passing estimated.

**Toroidal air core one-layer coil inductance****Coil or choke on a ferrite ring****Coil or choke in the pot core**(ferrite or powder iron)**The planar coil**(Flat coil on PCB with spiral round and square form of turns and as a single straight conductor)- The software have additional modules that allow to calculate:
**flat PCB coil with meandr form of turns**;- inductor as a
**rectangular one turn loop**; - estimate
**influence of the shield on the value of coil inductance**; **multi-winding round loop**with round cross-section;**ferrite rod core inductor**;**finding unknown permeability of a ferrite ring**;

- The program calculates inductance of different species of inductor design. It is possible to select an optimal variant, to use available coil-former or recalculate inductor to another dimensions.
- Coil32 allows to estimate
**Q-factor**of RF single layer air core inductor. - It's possible
**to estimate length of wire**what needed to wind onelayer, multilayer coil and the coil on a ferrite ring - Results of all calculations are deduced in a common text box, from where they can be saved in a file. Further you can view them and not to recompute again. It is possible to open this file in "MS Word" and to print out.
- For
**flat coil inductors on the PCB**the program prompts the optimal sizes for achievement of the highest Q-factor. - In the Network often there are programs for calculation of coils inductance working under DOS, about advantages of the Windows-interface, think, it is not necessary to speak.
- It is possible to develop additional plugins for the program to calculate different kind of coils and chokes.
- The program is
**free download.** **Multilingual interface**support.- The soft is multiplatform.
**There are versions for Linux, Android & J2ME**. - Offline calculations with save of result.