Construction Master Pro

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Rank Class iPhone iPad
Download Rank(Paid) 92 1363
Sales Rank 1748 6838

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Category iPhone iPad
Paid·Overall 92 1363
Paid·Utilities 3 51
Grossing·Utilities 90 86


  • Construction Master Pro
  • Construction Master Pro
  • Construction Master Pro
  • Construction Master Pro
  • Construction Master Pro
  • Construction Master Pro


Developer Calculated Industries
BundleID com.calculated.laurene
Version 10.8.0
Size 33.0MB
Released May 5,2010
Updated March 24,2020
Score 4.2
Review Num 83
Language English
Rating 12+
Compatibility 9.0


  • BulyKid - 2020-01-19 12:09:13

    Handy on the Jobsite

    Useful tool to have when walking the job site. Much easier than having to carry a full size calculator. I think $25 is a little more than it should cost personally, but it’s still cheaper than the real calculator. One complaint I have is the App icon looks very dated aside the rest of the apps on my phone. Hopefully that isn’t a sign that it no longer receives updates, or that it will become incompatible with new iOS versions.

  • Samiut25 - 2018-12-17 13:10:54

    Amazing please add the ( MASTER PLUS EZ)

    Already bought your calculators they are amazing i love them. But i wish you can make the app of the (Master plus ez) there’s a lot construction out there waiting for the calculator. I am A construction Contractor and i know the calculator is a 💣💥 for subcontractors

  • classhhher - 2020-03-25 23:23:58


    Would I be able to get my money back? , at my Job I’m not able to pull out my phone to use the calculator for some problems, other than that. It would be a great tool!


Two in one: the official Construction Master® Pro from Calculated Industries for your iPhone and iPad includes two models: #4065 and #4080 (CM Pro with Trig).  And while perhaps obvious, if you change from an iOS device to a non-iOS device, you WILL need to buy a new license as they are incompatible.

Advanced Feet-Inch-Fraction Construction-Math Calculator by Calculated Industries, built with the same features and functions, and with the same core engine that powers the industry-standard advanced construction-math calculators from Calculated Industries. You’ll actually get two apps in one, since the Construction Master Pro for iPhone has all the functionality of the Construction Master Pro and the Construction Master Pro Trig -– and includes a full User’s Guide built in, as well as the ability to press and hold a key for specific help!

Ideal for Architects, Builders, Contractors, Designers, Draftspersons, Engineers, Framers/Carpenters and Tradesmen

Need to quickly and accurately solve a construction problem when meeting with a client? Left your calculator in the truck? Just pull out your iPhone or iPad, tap on the Construction Master Pro icon, and you’ll have an answer in seconds!

•  You get ALL of the functionality of the handheld Construction Master Pro and Construction Master Pro Trig calculators in one powerful, easy-to-use app.
• Solve tough construction-math problems and reduce errors on the jobsite or in the office.
•  Reduce costly errors and save time and money. It will help you and your crew on every phase of your projects—estimating, bidding and building.

•  Created by Calculated Industries, the originator of the award-winning Construction Master calculators
•  All the functionality and solutions of the handheld Construction Master calculators and optimized for the iPhone/iPod Touch user
•  Entry Editing Backspace Key – with a swipe of a finger (left - to - right)
•  A complete User’s Guide in English or Spanish is available free at
•  Full trigonometric function: sine, cosine, tangent, arcsine, arccosine and arctangent
•  Powerful built-in solutions make it ideal for completing layouts, plans, bids and estimates
•  Work in and convert between all building dimensional formats: feet-inch-fractions, inch fraction, yards, decimal feet (10ths, 100ths), decimal inches and metric (m, cm, mm)
•  Built-in right angle functions simplify square-ups, rafters, slopes and more

Dimensional Math and Conversions
•  Feet-Inch-Fraction, Inch Fraction, Yards 
•  Decimal Feet (10ths, 100ths), Decimal Inches 
•  Preset Fractions (1/2" through 1/64") 
•  D:M:S, Decimal Degree Entry and Conversions 
•  Full Metric Function (m, cm, mm) 

Right Angle Solutions
•  Complete Right Angle/Rafter Calculations 
•  Pitch Key (Slope and Grade) 
•  Rise, Run, Diagonal/Common Rafters 
•  Hip/Valley Key 
•  Jack Rafters Key 
•  Irregular Hip/Valley and Jacks 
•  Rafter Cutting Angles (Plumb, Cheek and Level Cuts) 
•  Stair Layout Key 
•  Stair (Advanced – Riser Limit, Stairwell Opening, Headroom, Floor Thickness) 
•  Diagonal Key 
•  Expanded Rake-Wall 
•  Arched Rake-Wall 

Area and Volume Solutions
•  Square and Cubic 
•  Roof – Bundles, Squares, 4x8 Sheets, Pitch, Plan Area 
•  Drywall, Siding and Paneling 4x8, 4x9 and 4x12 
•  Column/Cone Area and Volume 
•  Basic Circular Calculations 
•  Advanced Circular Calculations 
•  Weight per Volume Conversions 
•  Length, Width and Height Keys 
•  Blocks, Footings 

Special Functions
•  Trigonometric Function Keys: Sine, Cosine, Tangent, Arcsine, Arccosine, Arctangent
•  Board Feet 
•  Studs: Find number On-center 
•  User-Definable Preferences 
•  Cost per Unit (total costs based on unit price) 
•  Equal-Sided Polygon 
•  Compound Miters 
•  Crown Angle 
•  Advanced Paperless Tape for all functions
•  4 Memories

Construction Master® is a registered trademark of Calculated Industries, Inc.