# Box Fill Pro

> Electrical wiring box fill calculator for electricians and DIYers. (iPhone/iPad app by Intineo LLC.)

- Source: https://appshunter.io/ios/app/box-fill-pro/id365831700 (this page in markdown: same URL + `.md`)
- Developer: [Intineo LLC](https://appshunter.io/developer/365831703)
- Category: Productivity
- Price: Free
- Rating: 2.75/5 from 4 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 15 MB
- Languages: English
- Released: 2010-04-06
- Data updated: 2026-06-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/box-fill-pro/id365831700/reviews.md

## What is Box Fill Pro?

Box Fill Pro is an easy to use app that calculates "Box Fill" requirements for an electrical wiring box.

- Detailed calculations, broken down by indivdual wire size and component.

- Optional "Cable mode" sizes boxes by counting cables, to simplify common calculations

- Volumes for standard boxes, and "typical" plaster rings for handy reference.

- All inputs and results on a single screen. No "Navigating" to do a simple calculation.

- Easy sharing or documenting of results via email.

- Written by a working electrician to make fast and useful calculations.

- Significant new features, which are a partial subset of "Electrical Wiring Pro Plus", the premier electrical wiring app from Intineo LLC.

## Key features

- Detailed wire size and component calculations
- Optional cable counting mode
- Standard box and plaster ring volumes
- Single-screen input and results
- Email sharing of results

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/box-fill-pro/id365831700/reviews.md

### 1/5 — Broken

*2023-01-23*

App opens for a split second then disappears.  
* If u ever fix it I should update for 2020 NEC changes to include ground wire.

### 1/5 — No good

*2021-12-07*

Terrible app it does not give cubic inches nor does it cover the 2021 NEC it give percentages for a box you have to choose waste of money

### 1/5 — no good

*2015-10-09*

diesnt work

### 3/5 — User

*2015-06-01*

The app worked very well, but now the sliders for adding ground wire size and number has disappeared.

### 1/5 — Box fill pro - conductor sizes incorrect

*2011-08-28*

Will not work on Canadian electrical code. Table 22 14AWG is 1.5cuin and 12AWG is 1.75 cuin!

### 5/5 — Perfect App

*2010-11-06*

As for the box fill apps this is the best one and the least expensive of the two.  It gives more of a selection of mud rings, and different styles of boxes, which we all know there are hundresds.  And because there are so many styles of boxes and mud rings the volume of a box can be changed easily to fit your job.

### 5/5 — Perfect for box fill

*2010-06-30*

I studied this app hard looking for errors, but the author is obviously an Electrician.  It figures devices and the ground wire perfectly.  Good app.

## Frequently asked questions about Box Fill Pro

### What is Box Fill Pro used for?

Box Fill Pro is an application designed to calculate the "Box Fill" requirements for electrical wiring boxes. It breaks down calculations by individual wire size and component, making it easier to determine if a box meets code requirements.

### Does Box Fill Pro have ads?

No, Box Fill Pro does not contain advertisements. It is a free application without any in-app purchases or ads.

### What devices does Box Fill Pro support?

Box Fill Pro is available for iPhone, iPad, and iPod touch devices. It is designed for Apple's mobile operating system.

### How often is Box Fill Pro updated?

The latest version of Box Fill Pro is 9.01, released on November 24, 2015. While the app has not been updated recently, it offers core functionality for electrical calculations.

### What is the age rating for Box Fill Pro?

Box Fill Pro has an age rating of 4+, indicating it is suitable for users of all ages. The content is generally considered safe and appropriate.

### Can Box Fill Pro calculate box fill by counting cables?

Yes, Box Fill Pro includes an optional "Cable mode" that allows users to size boxes by counting cables. This feature simplifies common calculations for electricians.

### How are results displayed and shared in Box Fill Pro?

All inputs and results in Box Fill Pro are displayed on a single screen for immediate access. Users can easily share or document their calculations via email.

### What is the user rating for Box Fill Pro?

Box Fill Pro has a user rating of 2.8 stars based on 4 ratings. This indicates a mixed reception from its user base.

## Version history (last 3 releases)

### 9.01 — 2015-11-24

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

Added Feedback button on About screen

Fixed Bug causing some boxes to not display number of wires per size.

### 9.0 — 2015-10-18

o iPad Master/Detail operation
o Upgrade Path to Electrical Wiring Pro Plus
o iOS 9 Look-and-feel
o Ampacity Calculation
o Dwelling Service/Feeder Calculation
o Conduit Fill Size Calculation
o Conduit Offset Bend Calculation
o Residential Range Load Calculation
o Voltage Drop Calculation
o Pire Wheel

### 1.0 — 2010-04-06

No release notes.

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## More apps by Intineo LLC

- [ElectricalWiringPro](https://appshunter.io/ios/app/electricalwiringpro/id522244565)
- [Electrical Wiring Lite](https://appshunter.io/ios/app/electrical-wiring-lite/id548946540)
- [Electrical Wiring Pro 2014+](https://appshunter.io/ios/app/electrical-wiring-pro-2014-plus/id1041249013)
- [Sparky's E6B Lite](https://appshunter.io/ios/app/sparkys-e6b-lite/id1248162312)
- [Sparkys E6B](https://appshunter.io/ios/app/sparkys-e6b/id1257423878)

All apps by Intineo LLC: https://appshunter.io/developer/365831703

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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 2026-06-07.*