# Construction Calculator - Feet — Rafters -  Diagonals - Jacks

> Construction math calculator for rafters, diagonals, and roof decking in feet and inches. (iPhone/iPad app by David King.)

- Source: https://appshunter.io/ios/app/construction-calculator-feet/id1483391678 (this page in markdown: same URL + `.md`)
- Developer: [David King](https://appshunter.io/developer/1481611999)
- Category: Utilities
- Price: $4.99 (on sale, was $49.99)
- Rating: 3.30/5 from 12 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.5 · 2 MB
- Languages: American English
- Released: 2019-10-15
- Data updated: 2026-08-28
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/construction-calculator-feet/id1483391678/reviews.md

## What is Construction Calculator?

Construction math using feet, inches, or regular numbers and it goes to the sixteenth..

Wizards support the necessary functions:

Diagonal for squaring up lay outs.

Rafters for gable roofs. 

Stairs for code compliance.

Jack rafters for roofs with hips or valleys.

Roof decking for the hip roofs.

## Key features

- Calculations in feet and inches
- Diagonal calculations for layouts
- Rafter calculations for gable roofs
- Stair calculations for code compliance
- Jack rafter calculations for hips/valleys
- Roof decking calculations for hip roofs

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/construction-calculator-feet/id1483391678/reviews.md

### 5/5 — Great and free

*2024-10-04*

Thanks for the app. It’s super helpful. The app takes a second to figure out. Fractions are not something I want to have to do off the dome all day. It’s get tiresome. Also useful for double checking your work. - Electrician

### 1/5 — There is bug!

*2024-08-17*

If I try 11 inch - 9 inch….impossible to select after 9!

### 5/5 — Excellent

*2024-04-27*

Best construction calculator on the market hands down. Simple, intuitive and accurate.  
Great app. Wish I had found it years ago.

### 1/5 — Won't do negative numbers

*2022-01-28, version 6.1*

Useless for calculating elevation because if you go below 0 it can't do the math. Only good for work with no underground.

## Frequently asked questions about Construction Calculator

### What units does Construction Calculator - Feet support?

Construction Calculator - Feet supports calculations using feet, inches, or regular numbers, with precision down to the sixteenth of an inch.

### Does Construction Calculator - Feet have ads?

No, Construction Calculator - Feet does not contain advertisements.

### What construction calculations can I perform with Construction Calculator - Feet?

You can perform calculations for layout diagonals, gable roof rafters, stairs for code compliance, jack rafters for hip or valley roofs, and roof decking for hip roofs.

### How accurate are the calculations in Construction Calculator - Feet?

The app performs precise calculations down to the sixteenth of an inch, ensuring accuracy for complex construction tasks.

### What devices is Construction Calculator - Feet compatible with?

Construction Calculator - Feet is available for iPhone and iPad devices.

### How often is Construction Calculator - Feet updated?

The latest version, 6.1, was released on November 5, 2021. Updates typically address bug fixes and feature enhancements.

### What is the price of Construction Calculator - Feet?

Construction Calculator - Feet is a paid application, priced at $4.99.

### What is the age rating for Construction Calculator - Feet?

Construction Calculator - Feet has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 4 releases)

### 6.1 — 2021-11-05

High contrast buttons with lager text.

### 6.0 — 2021-09-17

Even easier user interface specially designed for extreme conditions and no ads.

### 5.0 — 2020-07-17

Easier square feet and cubic yards

### 1.0 — 2019-10-14

No release notes.

## Apps similar to Construction Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Construction Master Pro Calc](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446) | 4.8 (39,372) | Free | Utilities |
| [Construction Master 5 Calc](https://appshunter.io/ios/app/construction-master-5-calc/id370412148) | 4.8 (13,064) | Free | Utilities |
| [Feet and Inches Calculator](https://appshunter.io/ios/app/feet-and-inches-calculator/id1072241945) | 4.6 (401) | Free | Utilities |
| [Construction Calculator](https://appshunter.io/ios/app/construction-calculator/id1092417398) | 4.7 (625) | Free | Utilities |
| [Material Estimator Calculator](https://appshunter.io/ios/app/material-estimator-calculator/id376071081) | 4.8 (3,093) | Free | Utilities |
| [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (10,020) | Free | Utilities |

## More apps by David King

- [LiDAR Measuring Tape](https://appshunter.io/ios/app/lidar-measuring-tape/id1580020431)
- [AB Level and Measure Tool](https://appshunter.io/ios/app/ab-level-and-measure-tool/id1635040877)
- [Lidar Laser Level Metric](https://appshunter.io/ios/app/lidar-laser-level-metric/id1636196068)
- [Precision Transit Level mini-X](https://appshunter.io/ios/app/precision-transit-level-mini-x/id6449722469)
- [Pro Construction Calculator](https://appshunter.io/ios/app/pro-construction-calculator/id6751753691)

All apps by David King: https://appshunter.io/developer/1481611999

---

*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 2026-08-28.*