# InductorCalc — Coil inductance calculator

> Calculate inductor and coil parameters from physical dimensions. (iPhone/iPad app by oskari saarinen.)

- Source: https://appshunter.io/ios/app/inductorcalc/id1409402075 (this page in markdown: same URL + `.md`)
- Developer: [oskari saarinen](https://appshunter.io/developer/1234576917)
- Category: Productivity, Education
- Price: $0.99
- Age rating: 4+
- Requires: iOS 12.0 · 17 MB
- Languages: American English
- Released: 2018-07-28
- Data updated: 2026-06-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/inductorcalc/id1409402075/reviews.md

## What is InductorCalc?

Designing your own inductor or coil?
InductorCalc makes it quick and easy to get the key parameters you need.

Enter your coil’s physical dimensions — number of turns, length, and diameter — and instantly calculate:
• Inductance (L) in a range of SI units
• Q-factor at your chosen operating frequency
• Total wire length needed for the winding
• DC resistance based on your wire’s Ω/m value

Simply fill in the fields, tap Calculate, and let the app do the math.
Perfect for electronics hobbyists, students, and anyone building custom inductors.

## Key features

- Calculate inductance (L)
- Calculate Q-factor at operating frequency
- Calculate total wire length
- Calculate DC resistance
- Supports multiple SI units

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/inductorcalc/id1409402075/reviews.md

### 5/5 — Simple App

*2019-11-11*

Needs to accommodate rel. perm.  to increase accuracy. No more than a ready reckoner.

## Frequently asked questions about InductorCalc

### What calculations does InductorCalc perform?

InductorCalc calculates inductance (L) in various SI units, Q-factor at a specified operating frequency, the total wire length required for winding, and the DC resistance based on the wire's resistance per meter.

### What information do I need to provide to use InductorCalc?

You need to input the coil's physical dimensions: the number of turns, its length, and its diameter. You also need to specify the wire's resistance per meter (Ω/m) and the desired operating frequency for the Q-factor calculation.

### Is InductorCalc available for free?

No, InductorCalc is a paid application. It is available for a one-time purchase price of $0.99.

### What devices support InductorCalc?

InductorCalc is compatible with iPhone, iPad, and iPod devices. It is designed for iOS.

### How often is InductorCalc updated?

The latest version of InductorCalc is 1.0.7, and it was last updated on August 23, 2025. Updates typically address bug fixes and performance improvements.

### What is the age rating for InductorCalc?

InductorCalc has an age rating of 4+, making it suitable for a wide range of users, including younger students interested in electronics.

### Does InductorCalc have ads?

No, InductorCalc does not contain advertisements. As a paid application, it provides an ad-free user experience.

### Can InductorCalc be used offline?

Yes, InductorCalc functions as a standalone calculator and does not require an internet connection to perform its calculations, making it usable offline.

## Version history (last 5 releases)

### 1.0.7 — 2025-08-23

Thanks for using InductorCalc!

What’s new in this version:
   • Updated and redesigned Help page
   • Improved offline support for Help content
   • iOS 12 is now the minimum supported version
   • Minor fixes and performance improvements

We’d love to hear your feedback!
If you have a feature suggestion or notice a bug, please email me at oskari.saarinen@saario.xyz – I’ll do my best to respond.

If you enjoy the app, a positive review really helps others discover it.
And if something isn’t working, please reach out first – most issues can be fixed quickly, and your input helps make the app better for everyone.

### 1.0.6 — 2022-04-15

Fix dark mode in iOS 15

Min. iOS version supported is now 11.0

*****
Thank you for those who send me a message about the dark mode problems!

If you found a bug or have an development suggestion, please send me a message: inductorcalc@ssl-saario.xyz

### 1.0.5 — 2021-08-15

Updated to improve support with newer devices

### 1.0.4 — 2018-07-10

This app has been updated by Apple to display the Apple Watch app icon.

You can now choose the unit you want to use by tapping the unit label. For example, you can choose for meter: µm (micrometer/micron), mm (millimeter), cm (centimeter), m (meter), Km (kilometer).

### 1.0.2 — 2018-07-09

No release notes.

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All apps by oskari saarinen: https://appshunter.io/developer/1234576917

## Related topics

[From the combination of resistors with resistance values R1 = R2 = R3 = 5 Ω and R4 = 10 Ω, which of the following combination is the best circuit to get an equivalent resistance of 6Ω ?](https://appshunter.io/ios/topics/from-the-combination-of-resistors-with-resistance-values-r1-r2-r3-5-and-r4-10-which-of-the-following-combination-is-the-best-circuit-to-get-an-equivalent-resistance-of-6) · [coil inductance calculator](https://appshunter.io/ios/topics/coil-inductance-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*