Construction Master Pro

Construction Master Pro

10,000 - 50,000 downloads

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Advanced Feet-Inch-Fraction Construction-Math Calculator by Calculated Industries for Carpenters, Builders & More.

The official Construction Master® Pro from Calculated Industries for your Android device includes two models: #4065 and #4080 (CM Pro with Trig). 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 Android 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 calculate a construction problem when meeting with a client? Left your calculator in the truck? Just pull out your Android device, 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.
• Calculate 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 Android device 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 Fraction Conversions (1/2" through 1/64")
• D:M:S, Decimal Degree Entry and Conversions
• Full Metric Conversion Function (m, cm, mm)

Right Angle Solutions
• Complete Right Angle/Rafter Calculations
• Pitch Key (Slope and Grade)
• Calculate Rise, Run, Diagonal/Common Rafters
• Hip/Valley Key
• Jack Rafters Key
• Irregular Hip/Valley and Jacks
• Calculate Rafter Cutting Angles (Plumb, Cheek and Level Cuts)
• Stair Layout Key
• Stair (Advanced Stair Calculations – Stair 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
• Calculate 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
• Paperless Tape
• 4 Memories

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

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

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Recently changed in this version

Enabled double-tap gesture to display area which invokes the "backspace" function. One double-tap equals one character erased from the display.

Screenshots Construction Master Pro
View bigger - Construction Master Pro for Android screenshot
View bigger - Construction Master Pro for Android screenshot
Comments and ratings for Construction Master Pro
  • (56 stars)

    by Bill VanKuren on 12/01/2015

    I though I had a problem with this app but it was just another app (lazy swipe) that somehow covered a part of the calculator while it was open. I made a post here and the Dev was super quick to respond. I feel bad for wasting Dev time. Thanks for such a great product. I broke so many of these little 20$ calculators in my toolboxes or toolbags. Since we are all good at being kind to our cell pho

  • (56 stars)

    by Hank Dole on 18/12/2014

    Can never find my calculator but I can normally find my phone. Use it a lot more than the actual calculator.

  • (56 stars)

    by Sheldon Gwizd on 14/12/2014

    This app I use religiously on the job and has never let me down, in fact it has saved me from making blunders. I would love to see an overlay version for tablets and desk tops so one can do estimates on the go off drawings being read on device.

  • (56 stars)

    by Steven Kyle on 09/12/2014

    Hated the calculator I had to carry around. love it on my phone

  • (56 stars)

    by Justin Scott on 02/12/2014

    Never have to look for my stupid calculator anymore, never have to buy another because I've lost or broken it. I use this everyday.

  • (56 stars)

    by Peter Heinrich on 29/11/2014

    The software is great and the fact that this is now on my phone instead of, yet another gadget, is well worth it. You have to download the guide though. The website doesn't make it easy to distinguish and find the right guide, but stick with the Construction Master Pro guide and the latest version, and you should be okay.

  • (56 stars)

    by rob hoskins on 27/11/2014

    Awesome contractors best friend

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