# Coil Calculator

> Single-Layer, Multi-Layer and Flat-Spiral air core inductor calculator

Canonical page: [https://chrome-stats.com/d/com.belev.android.coilcalculator](https://chrome-stats.com/d/com.belev.android.coilcalculator)

## Overview

- **ID:** `com.belev.android.coilcalculator`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Darko Belev
- **Category:** TOOLS
- **Downloads:** 73,615
- **Rating:** 2.94 / 5 (263 ratings)
- **Version:** 1.7.2.1
- **Last updated:** 2023-08-12
- **First published:** 2017-07-01
- **Publisher country:** BG
- **Size:** 4.61 MB
- **Data as of:** 2026-09-10
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.belev.android.coilcalculator)
- **Privacy policy:** [https://sites.google.com/view/coilcalculator-privacy-policy/home](https://sites.google.com/view/coilcalculator-privacy-policy/home)

## Description

Coil Calculator is an easy-to-use Chrome extension designed for calculating single-layer, multi-layer, and flat-spiral air core inductors. Whether you're a student learning about inductors or an engineer designing circuits, this tool simplifies your calculations and enhances your workflow. With a user-friendly interface, it allows you to quickly input parameters and obtain precise inductance values for your coil designs.

This extension is perfect for anyone working with air core inductors, providing efficient and accurate results that streamline the design process. It supports various coil configurations, making it a versatile addition to your engineering toolkit.

## Rankings

- #253,397 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.belev.android.coilcalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Users appreciate the app's usefulness in calculating coils and inductance for DIY projects and find it helpful and affordable, especially the paid ad-free version. However, many report serious issues such as excessive ads after each calculation, incorrect or unreasonable calculation outputs, inconsistent unit usage, and instability with crashes or usability problems, diminishing overall satisfaction.

### Pros

- Helps in estimating coil form sizes and inductance for projects.
- Works perfectly and is very helpful for users.
- Affordable paid version available that removes ads.
- Good for experimenting with dividing networks and coil calculations.
- Some users find it useful and worth the purchase.

### Cons

- Excessive and intrusive advertisements after every calculation.
- Calculation results are often incorrect or unrealistic, leading to confusion.
- Inconsistent or unclear units used, mixing inches and millimeters without clear indication.
- App crashes or does not open properly on some devices.
- Difficult to use and not user-friendly according to some users.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.belev.android.coilcalculator)