# Carpentry Calculator — Calculations made easy

> Tool for carpenters and builders to perform complex construction calculations. (iPhone/iPad app by Matthew Spencer.)

- Source: https://appshunter.io/ios/app/carpentry-calculator/id1586739365 (this page in markdown: same URL + `.md`)
- Developer: [Matthew Spencer](https://appshunter.io/developer/1642000494)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 23 MB
- Languages: American English
- Released: 2025-10-01
- Data updated: 2026-08-16
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/carpentry-calculator/id1586739365/reviews.md

## What is Carpentry Calculator?

The Carpentry Calculator is a must-have tool for all carpenters, builders, handymen and DIYers. This handy app makes light work of any tricky calculations, using either metric or imperial units. It is simple and easy to use, but very powerful. All screens have help available and the app can be switched easily between light and dark modes.

The app will complete difficult calculations for roofing, stairs, raked walls, concrete post holes and slabs, concrete stairs, cladding, decking, balustrades (level and raked), trigonometry and that's just the tip of the iceberg.

What separates us from the rest is the attention to detail. Most functions will even draw your work and give you a list of running measurements so you know exactly what you are marking out.

The Carpentry Calculator will improve efficiency and productivity on the worksite leading to a faster, more accurate and therefore more profitable job. No more scratching your head or pulling out the old textbooks to try remember how to calculate something. Download and see for yourself!

## Key features

- Roofing calculations
- Stair and decking measurements
- Concrete slab and post hole calculations
- Raked wall and balustrade design
- Trigonometry functions
- Metric and imperial unit support
- Light and dark mode options

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade to paid version | $4.99 | one-time |
| Discounted upgrade | $3.49 | one-time |


## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/carpentry-calculator/id1586739365/reviews.md

### 3/5 — Curious

*2024-05-03, version 1.4.1*

Seems good however I crossed checked your roofing answers with “handcocks red roofing book’ wich is considered the standard for roofing in Australia, and your answered where often over 100mm different. Why do you think about this

### 5/5 — Awesome app

*2024-03-08, version 1.4.1*

Awesome app

### 5/5 — Amazing

*2023-09-03, version 1.3.3*

Simple, easy to use, no extra unnecessarily guf and it just works
Use it regularly on site 
Completely recommend it 
Amazing app 5 ⭐️

### 4/5 — Export ?

*2023-03-31, version 1.2.3*

Hi this is great and I want to purchase however if I purchase can I export the data to a pdf?

### 3/5 — Subscription

*2022-10-28, version 1.2.3*

Hi,
I like the app and have no problems using it, but I’m not sure if the subscription is a one off payment or monthly. I bought it thinking it was a one off payment but I have just been charged again from my credit card.
Please advise.

### 5/5 — Love it

*2022-05-14, version 1.2.1*

This app is too good to be true 🤔 you guys really live by the philosophy make a free product that’s great and they’ll want to buy the paid version! So cool to see 🥳

### 5/5 — Features Galore

*2021-12-22, version 1.0.15*

Really surprised with the detail of the calculations available in a seemingly simple layout. Dive in and enjoy.

## Frequently asked questions about Carpentry Calculator

### What types of calculations does Carpentry Calculator perform?

Carpentry Calculator handles a wide range of calculations including roofing, stairs, concrete slabs and post holes, cladding, decking, balustrades, and trigonometry. It aims to simplify these often tricky tasks for users.

### Can I use Carpentry Calculator with both metric and imperial units?

Yes, Carpentry Calculator supports both metric and imperial units, making it versatile for users working with different measurement systems.

### Does Carpentry Calculator offer visual aids for calculations?

Yes, most functions in Carpentry Calculator will draw your work and provide a list of running measurements. This helps users visualize their projects and ensures accurate marking out.

### Is Carpentry Calculator available on Android devices?

Based on the provided data, Carpentry Calculator is supported on iPhone and iPad. Information regarding Android availability is not specified.

### How often is Carpentry Calculator updated?

The latest version of Carpentry Calculator is 1.7.5, last updated on December 27, 2025. This indicates a recent update, suggesting ongoing development and support.

### What is the age rating for Carpentry Calculator?

Carpentry Calculator has an age rating of 4+, making it suitable for a wide range of users, including younger individuals learning about construction or DIY.

### Does Carpentry Calculator have ads?

No, Carpentry Calculator does not contain advertisements. The app is free to use without any ad interruptions.

### What makes Carpentry Calculator different from other calculation apps?

Carpentry Calculator distinguishes itself with its attention to detail, including drawing functions and lists of running measurements for precise marking. It aims to improve efficiency and profitability on job sites.

## Version history (last 5 releases)

### 1.7.7 — 2026-08-10

Fixed some triangle solver layout issues.

### 1.7.6 — 2026-07-12

Fixed a minor bug in the deck joist calculation.

### 1.7.5 — 2025-12-27

Fixed a few minor issues and made some usability improvements.

### 1.7.4 — 2025-12-03

This release adds a new Raked Walls feature: the ability to add extra studs at any position.  We have also fixed some issues with the Triangle Solver and made general performance and usability improvements.

### 1.7.2 — 2025-10-20

Minor bug fixes.

## Apps similar to Carpentry Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Chippy Tools: Construction](https://appshunter.io/ios/app/chippy-tools-construction/id1579138717) | 4.5 (903) | Free | Utilities |
| [Roof Guide - Carpentry Calc](https://appshunter.io/ios/app/roof-guide-carpentry-calc/id920670842) | 4.1 (16) | Free | Utilities |
| [The Chippy Calc: Builder Tools](https://appshunter.io/ios/app/the-chippy-calc-builder-tools/id6499256065) | 4.5 (2) | Free | Utilities |
| [Buildr - Building Calculator](https://appshunter.io/ios/app/buildr-building-calculator/id6446961698) | 4.8 (13) | Free | Utilities |
| [Construction Calculator: Pro²](https://appshunter.io/ios/app/construction-calculator-pro/id6753908597) | 4.9 (17) | Free | Utilities |
| [RoofCalc - Roofing Calculator](https://appshunter.io/ios/app/roofcalc-roofing-calculator/id1014237429) | 4.0 (9) | Free | Utilities |

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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 2026-08-16.*