# Fast Calc

> Electrical calculation tools for electricians, including cable sizing and voltage drop. (iPhone/iPad app by iCertifi.)

- Source: https://appshunter.io/ios/app/fast-calc/id979637842 (this page in markdown: same URL + `.md`)
- Developer: [iCertifi](https://appshunter.io/developer/490104127)
- Category: Productivity, Business
- Price: $1.99
- Age rating: 4+
- Requires: iOS 8.0 · 12 MB
- Languages: American English
- Released: 2015-04-02
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/fast-calc/id979637842/reviews.md

## What is Fast Calc?

Electrical cable calculator &  range of electricians calculators on iPhone

√ Cable Calculator*

√ Solar Energy output calculator 

√ Lux Level calculator

√ kW to Amps calculator 

√ 3 phase voltdrop calculator 

√ Pfc calculator 

√ BTU to watts calculator

√ Resistance calculator Ω

√ Amps to VA calculation

√ kW to kVA calculation


* Calculates voltage drop, percent drop, load and suggests a minimum cable size.  Cables include,
  -  Twin and earth 
  -  MIC 
  -  FP cable 
  -  Up to 400m SWA 2/4/&4 core PVC
  -  Up to 400m SWA 2/4/&4 core XPLE
  -  Tri Rated (H05/7/V2-K)

- Instant results with no requirement for an internet connection
- Results are saved to history tape
- Copy results to pasteboard
- Easy to use
- No internet connection required

******* Also available on Mac *********

## Key features

- Cable Calculator (voltage drop, load, size)
- Solar Energy Output Calculator
- Lux Level Calculator
- kW to Amps Calculator
- 3 Phase Voltdrop Calculator
- PFC Calculator
- BTU to Watts Calculator
- Resistance Calculator

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/fast-calc/id979637842/reviews.md

### 1/5 — HORRENDOUS APP

*2024-08-07, version 1.1*

DO NOT BUY. THIS IS A INSULT TO CHARGE FOR IT.

### 1/5 — Not impressed

*2018-07-11, version 1.1*

I have several ICertifi apps and find them good useful tools.
However for the price this app isn’t up to much there are free apps that do better. 
Come on ICertifi for this money I would expect more complex calculations, including 3-phase calculations.

### 1/5 — NICEIC qs

*2016-04-19, version 1.1*

Terrible, deleted straight away, waste of time and money!!

## Frequently asked questions about Fast Calc

### What electrical calculations can Fast Calc perform?

Fast Calc offers a comprehensive range of electrical calculations including cable sizing with voltage drop analysis, solar energy output, lux levels, kW to Amps conversion, 3-phase voltage drop, PFC, BTU to watts, resistance, and Amps to VA.

### Does Fast Calc require an internet connection to work?

No, Fast Calc provides instant results without the need for an internet connection, making it a reliable tool for use on job sites.

### Can I save or export my calculations from Fast Calc?

Yes, all results from Fast Calc are automatically saved to a history tape, and you can easily copy them to your pasteboard for use in other applications.

### What types of cables are supported by the Cable Calculator in Fast Calc?

The Cable Calculator in Fast Calc supports various cable types including Twin and Earth, MIC, FP cable, SWA (2/4/4 core PVC and XPLE up to 400m), and Tri Rated (H05/7/V2-K).

### What is the price of Fast Calc?

Fast Calc is a paid application priced at $1.99.

### What devices is Fast Calc available on?

Fast Calc is available for iPhone and iPod devices.

### How often is Fast Calc updated?

Fast Calc was last updated on June 4, 2015, to version 1.1.

### What is the age rating for Fast Calc?

Fast Calc has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 2 releases)

### 1.1 — 2015-06-04

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

√  Adds Fast Calc Apple Watch app

- Amps to VA calculation added
- kW to kVA calculation added

### 1.0 — 2015-04-02

No release notes.

## More apps by iCertifi

- [iCertifi](https://appshunter.io/ios/app/icertifi/id490104124)
- [iCertifi PAT Edition](https://appshunter.io/ios/app/icertifi-pat-edition/id576018154)
- [iCertifi Gas Edition](https://appshunter.io/ios/app/icertifi-gas-edition/id579911726)
- [iCertifi Fire Edition](https://appshunter.io/ios/app/icertifi-fire-edition/id595143989)
- [Symphony - Gimble Friendly Video Recorder](https://appshunter.io/ios/app/symphony-gimble-friendly-video-recorder/id1199064956)

All apps by iCertifi: https://appshunter.io/developer/490104127

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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 2026-06-10.*