# Electrical Calculator — Ohm's Law, Voltage Drop, Wire

> Comprehensive electrical calculation tools and formulas for professionals and students. (iPhone/iPad app by V PUGAZHENTHI.)

- Source: https://appshunter.io/ios/app/electrical-calculator/id495478153 (this page in markdown: same URL + `.md`)
- Developer: [V PUGAZHENTHI](https://appshunter.io/developer/491898049)
- Category: Utilities, Education
- Price: $3.99
- Rating: 4.60/5 from 462 App Store ratings · 15 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 18 MB
- Languages: German (Germany), Italian, French (France), Chinese (Simplified, China), American English, Dutch, European Portuguese, European Spanish, Arabic
- Released: 2012-01-24
- Data updated: 2026-08-17
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/electrical-calculator/id495478153/reviews.md

## What is Electrical Calculator?

Electrical Calculator is your all-in-one app for fast, accurate, and essential electrical calculations. Packed with 60+ powerful tools, it's designed for electricians, electrical & electronics engineers, and students. Every calculator includes built-in formulas and supports both USCS and SI units.

What's New:
• Category filters — find any calculator in seconds with purpose-based groups: Ohm's Law, Wiring & NEC, Power & Phase, Motors, Transformers and more
• Refreshed design with a cleaner look

Core Calculators:
• Voltage, Current, Resistance & Power (Ohm's Law)
• kVA to Amps / Amps to kVA (Single & Three Phase)

Electrical System Calculators:
• Voltage Drop Calculator (per NEC/IEEE standards)
• Wire Size Calculations (AWG & mm²)
• Power, Current & Horsepower (DC, Single & Three Phase)
• Efficiency & Power Factor Calculators
• Neutral Current (3-Phase Unbalanced Loads)

Transformers & Generators:
• Transformer Current, Voltage & Resistance Imbalance
• DC Generator

Reactance & Impedance:
• Inductive & Capacitive Reactance
• Resonant Frequency
• Characteristic Impedance (Parallel & Coaxial)
• Impedance Calculators (R-L-C combinations)

Series / Parallel Calculations:
• Resistance, Inductance & Capacitance (Series & Parallel)
• Unknown Resistance & Capacitance (Series & Parallel)

Components:
• Resistor Color Code — resistance to color bands and back
• Inductor & Capacitor Sizing Formulas

Lighting & Energy Tools:
• Luminous Intensity, Luminous Flux & Solid Angle
• Energy Cost Calculator
• Energy Stored in Resistors, Inductors & Capacitors

Conversions:
• Star ↔ Delta Conversion
• Field Strength & Electrical Potential
• Resistance, Resistivity, Conductance & Conductivity
• Capacitance, Inductance & Charge Density Converters
• Power Converter

Key Features:
• Category filters for fast navigation
• Flexible unit selection for inputs and outputs
• Full iPad support with split view
• Dark Mode and 12 languages
• Clean interface for the field, the shop, and the classroom

## Key features

- Over 65 electrical calculation tools
- Resistor color code calculators
- Upgraded voltage drop calculations
- Wire size calculations
- Series/parallel circuit calculations
- Energy cost calculator
- Unit conversions

## Chart rankings

- #190 in Top Paid · Utilities (US App Store)

## What do users think of Electrical Calculator?

Overall sentiment: mixed

**Pros**

- 👍 Great app, useful for years
- 👍 Good app
- 👍 Brilliant Program
- 👍 Essential shortcut for professionals
- 👍 Works great
- 👍 Very Convenient conversion calculator
- 👍 Really great app for electrical conversions
- 👍 Very good easy app
- 👍 Very Usefull and handy

**Cons**

-  annoyance: popup advising update
- 💸 Paid for calculators, then asked for more
- 💸 Lost money
- 💸 Costs extra for full content
- 📏 No impedance calculators
- 📏 Not compatible with AWG cables in metric regions
- 🐛 Converter not working
- 🐛 App not working on iPhone 4

**Commonly reported bugs**

- Annoying popup for app update
- Converter not working
- App not working on older iPhone models

**Most requested features**

- Include impedance calculators
- Improve metric region compatibility for AWG cables

## Recent user reviews (10 of 15)

All indexed reviews: https://appshunter.io/ios/app/electrical-calculator/id495478153/reviews.md

### 3/5 — Good but popup annoying

*2025-12-30*

Great app and been using it for years but latest update is annoying as popup advising update to ver 11 is in version 11

**Developer response:** Thanks for pointing  this issue the issue is fixed now in the latest version 11.1
We regret for the inconvenience caused.

### 1/5 — Based on AWG cables

*2021-02-01*

If you are in the USA this will probably work for you.
Try to work out volt drop in AWG in metric Europe / UK 
After paying for the supposed 50 calculators, in less than 3 mins the app was trying to sell me 16 more! 
I want my money back.

**Developer response:** Dear Customer ,
We will try to AWG wire sizes in (SI) system in the next update.
Anyway if you need refund, kindly contact Appstore.

with regards
V PUGAZHENTHI

### 1/5 — This app is really bad . I don’t like it

*2020-03-25*

I lost my money

**Developer response:** Hi,

Its very unfortunate, that you don't like the Electrical Calculator App.You can always get refund from the Appstore within 30 days from the date of purchase.

with regards,
V PUGAZHENTHI

### 4/5 — Good app

*2019-08-09*

Good app

**Developer response:** Dear Customer,

The cost of the App is 3.99USD only and it offers an additional set of Electrical Converters, which can be accessed by paying a
 one time cost of 0.99USD.

with regards
V PUGAZHENTHI

### 3/5 — No impedance calculators

*2018-10-30*

Am I blind or is there not a single impedance calculator in the bunch? The other calculators are great but I can’t give this app 5 stars without there being any impedance calculators on here.

**Developer response:** Hi,

Thanks for writing to us, we will try to include impedance calculations in the next update.

with regards
V Pugazhenthi

### 1/5 — 拉几应用

*2018-09-13*

。。。。。。。。。。。。。。

### 5/5 — My review.

*2018-05-15*

I wish with all my past working experiences, I could have had a great little Program like this, it would have saved me from a lot of time.
Brilliant Program.😀

### 1/5 — Not working

*2018-04-24*

The converter is not working.

**Developer response:** The converter is a separate App, and it needs to be unlocked in order to use all the converters.For any assistance kindly  contact support.

### 5/5 — It a shortcut that essential.

*2018-03-17*

If your a professional in any electro-mechanical profession. You need to learn to use it. It is required. Use it or be left behind. As it should be. 
Thank you.

### 5/5 — Love it

*2018-01-19*

Works great

## Frequently asked questions about Electrical Calculator

### What does the Electrical Calculator app do?

The Electrical Calculator app provides a comprehensive suite of over 65 tools and formulas for performing essential electrical calculations. It is designed for electrical and electronics engineers, students, and professionals, offering accurate and fast results for a wide range of electrical engineering tasks.

### What are the key features of the Electrical Calculator app?

Key features include over 65 calculation tools such as voltage, current, resistance, and power calculators, as well as specialized tools for voltage drop, wire sizing, series/parallel circuits, and resistor color codes. It supports both USCS and SI units and offers flexible unit selection for inputs and outputs.

### Is the Electrical Calculator app free to use?

Yes, the Electrical Calculator app is completely free to use. It does not contain any in-app purchases or advertisements, allowing users to access all its features without any cost.

### What kind of electrical calculations can I perform with this app?

You can perform a wide variety of calculations including basic electrical parameters (voltage, current, resistance, power), electrical system calculations (voltage drop, wire size, kVA to Amps), reactance and impedance calculations, series/parallel circuit analysis, lighting and energy tools, and various unit conversions.

### Who is the target audience for the Electrical Calculator app?

The app is primarily designed for Electrical and Electronics Engineers, students studying these fields, and other professionals who regularly need to perform electrical calculations. Its simple interface makes it accessible for both beginners and experienced users.

## Version history (last 5 releases)

### 11.2 — 2026-07-08

• Find calculators faster — new category chips group all 60+ calculators by purpose
• Bug fixes and improvements

### 11.1 — 2026-01-20

• Fixed a bug that caused repeated update prompts.

### 11.0 — 2025-10-30

• Added resistor color code calculators.
• Updated voltage drop per NEC/IEEE standards.

### 10.6 — 2025-07-28

Regular update with improvements for a smoother experience.

### 10.5 — 2024-07-26

Added dark mode for better usability
new calculations added :
DC Electrical Generator
Transformer Calculations

## Apps similar to Electrical Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Electric Toolkit - Calculator](https://appshunter.io/ios/app/electric-toolkit-calculator/id516862639) | 4.8 (288) | $5.99 | Utilities |
| [Electrical Calculator lite](https://appshunter.io/ios/app/electrical-calculator-lite/id922903696) | 4.6 (573) | Free | Utilities |
| [Electrical Calc Elite](https://appshunter.io/ios/app/electrical-calc-elite/id510284903) | 4.8 (125) | $19.99 | Utilities |
| [Circuit Resistance Creator](https://appshunter.io/ios/app/circuit-resistance-creator/id1475404949) | 5.0 (3) | Free | Utilities |
| [WireSizer - DC Voltage Drop](https://appshunter.io/ios/app/wiresizer-dc-voltage-drop/id494748550) | 4.5 (224) | $4.99 | Utilities |
| [kVA Calculator](https://appshunter.io/ios/app/kva-calculator/id467407057) | 4.4 (11) | Free | Utilities |

## More apps by V PUGAZHENTHI

- [Ohms Law Calc.](https://appshunter.io/ios/app/ohms-law-calc/id491898006)
- [Electrical Converter](https://appshunter.io/ios/app/electrical-converter/id497685179)
- [Electrical Engineering Pack](https://appshunter.io/ios/app/electrical-engineering-pack/id505423236)
- [Elec Series & Parallel Calc.](https://appshunter.io/ios/app/elec-series-and-parallel-calc/id511296315)
- [Universal Converter.](https://appshunter.io/ios/app/universal-converter/id519552652)

All apps by V PUGAZHENTHI: https://appshunter.io/developer/491898049

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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 2026-08-17.*