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Android Apps > Business > BuildCalc
App profile & analytics · Business · Data updated 2026-09-27
BuildCalc icon

BuildCalc

by 42nd Parallel · $24.99 · Version 2.15.132

“BuildCalc - the easiest AND the most advanced construction calculator app.” the developer's tagline

Availability On Google Play since August 2011 ↗
Rating on Google Play
4.72/5
191 ratings
At a glance AppBrain's trailer of this app, made from our data
Rating
4.72
191 reviews
Total installs
10
thousand
Installs, last 30 days
68
Best rank
–
not in the top lists
Last updated
September 15, 2026
2.15.132
AppBrain's verdict EstablishedLoved by users

BuildCalc has 10 thousand installs. Users love it: 4.7 stars from 191 ratings. Show more ›

BuildCalc is made and published by 42nd Parallel. AppBrain is an independent app data site and isn't affiliated with 42nd Parallel. The app name, icon, screenshots and description belong to 42nd Parallel and are shown as published on Google Play.

Summary

BuildCalc delivers a professional-grade construction calculator with advanced railing, stair, and masonry functions, plus interactive results and PDF sharing for professional project planning. With a long market presence, it has 10,000+ total downloads and 68 downloads in the last 30 days.

Pros & Cons

  • Deep, industry-specific calculations for balusters, stairs, fences, and more
  • Interactive results with automatic updates and editable inputs
  • PDF sharing of staircase and baluster drawings for easy collaboration
  • Support for storing multiple custom sizes and quick recall of results
  • Premium price of $24.99 may deter casual users
  • Advanced feature set can be overwhelming for beginners
  • Not ranked in any top app lists, which may affect visibility among some buyers

About BuildCalc

BuildCalc is a business app developed by 42nd Parallel.

How many times has BuildCalc been installed?

BuildCalc has been installed 10 thousand times. In the last 30 days, the app was installed 68 times.

What is the rating of BuildCalc?

BuildCalc is rated 4.72 out of 5 stars, based on 190 ratings.

Is BuildCalc free?

BuildCalc costs $24.99. The app size is 16.27 MB. The latest version available is 2.15.132. The last update was on September 15, 2026.

What are the requirements for BuildCalc?

BuildCalc requires Android 4.0.3+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since August 2011.

Description by 42nd Parallel (from Google Play)
What if you could take the best construction calculator and fix it. That’s right ... you love it, it has served you well, and you stand by it ... but could it do more? Could it be easier to use?

*** I have a lot of myself in this app and want it to be the best construction calculator app. IF YOU ENCOUNTER ANY DIFFICULTIES, PLEASE CONTACT ME AT INFO-AT-BUILDCALC.COM - I REALLY WANT TO HELP! ***

After nine months of development and testing by pros from around the world, BuildCalc for Android is ready to give you more - more function and more answers with less complexity, less hassle, and less confusion.


MORE FUNCTIONALITY:

• Advanced Baluster Function: Complete layout of railing and staircase balusters with less guess work - and with all the flexibility you need for every custom job.
• Advanced Stair function: Stair layouts for professional results - including dimensioned drawings of your Stringer, Stringer Installation, and Finished Staircase. And you can email a PDF of these drawings right from BuildCalc so you can print them or share them.
• Fence Function: Give BuildCalc a fence row length and it will tell you how many posts, rails, pickets, and or panels you need.
• Interactive Functions: The Stair, Baluster, Compound Miter, Diagonal and Hip/Valley functions are now fully interactive. Want to change input values? Change the Run? Switch between Regular and Irregular Hip Roof analysis? You can do this and your results will be updated automatically - without you needing to remember what key to press.
• New Full Daylight Visibility Mode


MORE ANSWERS:

• You are no longer tied down to: only one brick, block or tile size for the masonry function; a fixed number of drywall sheet sizes; only one footer cross sectional area; or one size of shingles and sheathing. If you don’t see the size you want, you can add as many as you need. And for area input, you can store your custom sizes in Length x Width format, so you won’t have to do mental gymnastics to figure out what was the dimensions for that last size you stored.
• Want to cut your hip roof rafter using a miter saw ... or a circular saw using a hand-held protractor? With a tap of a button, BuildCalc will automatically switch between Miter Saw and Protractor results. BuildCalc can do this for Compound Miters, too.
• Sheathing Angles, Purlin Angles, Gable Area, Backing Angles, Plan Angles, Rough vs. Finished Stair Layout Dimensions, Stringer Throat, Stringer installation dimensions ... and a lot more not found on other construction calculators.


LESS COMPLEXITY AND LESS HASSLE:

• Tired of having to press and press and press buttons to get the results of a calculation? BuildCalc puts an end to this. For all advanced functions, you get ALL of your results in list form with just one or two key taps.
• And, rather than having to write down those results, all advanced functions allow you to save your results so you can recall the complete results at your convenience.
• Less “quirks”. Have you been annoyed by arcane key stroke sequences on other construction calculators? We are too. BuildCalc streamlined the keystrokes to do a better job of giving you less “errors” and more results. Don’t remember what you have to enter before a Hip Rafter or Stair calculation? Well, now you don’t have to. BuildCalc will provide you with a check list of inputs and on-the-spot help to get it right.
• Drywall and Masonry “Room Mode”: If you have stored a Length, Width and Height for a room, BuildCalc will give you the Drywall or Masonry required for the walls and the ceiling / floor - with only a tap of the Drywall or Masonry button. No more pondering over complex key sequences ... it just works.
• Full Construction Master® Pro emulation. BuildCalc is in no way affiliated with Calculated Industries, owners of the Construction Master trademark.

Recent changes:
FIXED:
Ⓐ Repeat Operation is using the wrong value for repeat calculations.
Ⓑ Tape does not show Repeat Operation results when in [Results Only] mode.
Ⓒ Dimensional lumber inputs (ex: 2x12) does not show actual dimensions.
Ⓓ Changed "Heel" labels to "Seat" or "Seat Cut" in Common Rafter function.
Show more Show less

App Performance Report

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Get PDF Report — $29

Screenshots

BuildCalc Screenshot 1 of 8
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BuildCalc Screenshot 8 of 8
Screenshots by 42nd Parallel, from the Google Play listing
Official page on Google Play

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Stairs-X Lite - Calculator icon Stairs-X Lite - Calculator
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RedX Stairs - 3D Calculator icon RedX Stairs - 3D Calculator
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Google Play Rating history and histogram

170
5
2
2
8

Installs over time

BuildCalc has been installed 10 thousand times. Over the past 30 days, it has been installed 68 times.

Changelog of BuildCalc

Show changelog

Developer information for 42nd Parallel

42nd Parallel

buildcalc@gmail.com

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Comments on BuildCalc for Android

★★★★★ Sean McGrath · Dec 6, 2023
This app is GREAT! I've had this and Construction Master Pro on my phone for years! But BuildCalc has been the one I choose to use daily! Now with Construction Masters greed BuildCalc is an even better value not to mention a better Calculator! Don't hesitate once you have this on your device you will use it more than you thought you would! Love this app!!
★★★★★ A Google user · May 29, 2016
John Best calculator on the market for remodel and new construction. Stair steps, rails, and balusters become a breeze.
★☆☆☆☆ Duane Fair · Apr 25, 2017
Too much permission request from this app. The calculator works fine. It doesn't need access to device and app history or call info, etc. Check the permissions yourself and decide if a calculator needs access to all that info
★☆☆☆☆ Billy Johnson · Dec 10, 2025
Been a brilliant app since I installed it 10 years ago, but for the last 3 months it's developed a bug. It takes forever to load, when it does it I do a calculation then come out of the app to use anywhere, then come back into this one without shutting it down then it crashes and weight accept any commands. Forcing an app closure then the long wait to get back in

Google Play Rankings for BuildCalc

This app is not ranked

Technologies used by BuildCalc

8 permissions · 3 libraries
Subscribe to see full permission and library details
Trust & Safety: Permissions include INTERNET and ACCESS_WIFI_STATE for connectivity, READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE for file handling, READ_PHONE_STATE and VIBRATE for device interaction. It uses Google Play licensing (CHECK_LICENSE) and a dynamic receiver not exported permission. There are no location or camera permissions requested. Overall, a standard safety posture for a professional calculation app, with storage and device state access kept to essential needs.

Frequently asked questions about BuildCalc

Is BuildCalc free?

No. BuildCalc costs $24.99 on Google Play.

Is BuildCalc still available?

Yes. BuildCalc is on Google Play, and the last update we saw was on September 15, 2026.

Does BuildCalc contain ads?

No. Google Play does not list BuildCalc as containing ads.

What Android version does BuildCalc require?

BuildCalc runs on Android 4.0.3 and higher.

How large is BuildCalc?

BuildCalc is 16.27 MB.

Is BuildCalc suitable for children?

Google Play rates the content of BuildCalc as suitable for everyone.

How many times has BuildCalc been installed?

Google Play lists 10,000+ installs for BuildCalc.

How do people rate BuildCalc?

BuildCalc scores 4.72 out of 5 stars, from 191 ratings on Google Play.

Who made BuildCalc?

BuildCalc was developed by 42nd Parallel. It is listed in the business category on Google Play.

What are the best alternatives to BuildCalc?

People looking at BuildCalc also look at these business apps: Stairs-X Pro Stairs Calculator, Feet & Inch Construction Calc, Stair Calculator Riser Tread, Construction Calculator Tool, RedX Construction Calculator.

Popular Business Apps Price drops on Google Play Top new apps Today's trending apps Apps other people are watching
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Feet & Inch Construction Calc icon Feet & Inch Construction Calc
Stair Calculator Riser Tread icon Stair Calculator Riser Tread
Construction Calculator Tool icon Construction Calculator Tool
RedX Construction Calculator icon RedX Construction Calculator
Construction Master Pro Calc icon Construction Master Pro Calc
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RedX Stairs - 3D Calculator icon RedX Stairs - 3D Calculator
Overview Alternatives History Reviews Rankings Technology
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