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Construction Master Pro for Windows
Model 4109
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[+] Overview

Construction Master Power - On Your PC

New - Version 4.0.2
  • More powerful
  • Easier to use
  • Looks and works like your Construction Master Pro calculator
  • No learning curve
Download Construction Master Pro for Windows

With Construction Master Pro for Windows, you can have the power of the award-winning Construction Master Pro on your PC. Calculate in Feet, Inches, Fractions, Yards and Metric. Check plans, dimensions and takeoffs. Use it as a handy pop-up program without leaving your CAD, construction estimating, scheduling, Excel or other building software applications. Print your results to file or take them to the jobsite.

New with Construction Master for Windows 4.0.2

  • Calculator image can be displayed in three sizes
  • Two full-featured calculators are included - the 4065 and 4080 (with trig functions)
  • Easy to use electronic user guide
  • Expanded Tape function lets you load, save, and print your calculations
  • Export (copy and paste) your calculations to other Windows programs

[+] Details
  • Works in and Converts Between All Building Dimensional Formats
    Feet, Inches, Fractions, Yards and Metric - Including Square and Cubic Formats
  • Custom Rafter Keys
    Give you Common, Regular (45°) and Irregular (non-45°) Hips/Valley and Jack Rafters
  • Jack Rafter Functions
    Provide complete solutions in ascending/descending order for Regular- and Irregular- pitch roofs
  • Instant Rafter Cutting Angles
    Cheek, Level and Plumb
  • Advanced Circular Solutions
    Arches, column/cone, pillars, windows, post holes and more
  • Rake-Wall Key
    Determines each stud length for any on-center spacing; ascending or descending order
  • Complete Stair Solutions
    Risers, Treads, Stringer Length, Incline Angle
  • Trigonometric functions
    Simplify complex construction math: Sine, Cosine, Tangent, Arcsine, Arccosine and Arctangent
  • D:M:S to Decimal Degree Conversions
  • Automatic Block and Footing Solutions
  • Backspace Key
  • Three built-in Memories
    Store constants and accumulate values
  • Preference Function For User-Defined Options
    Custom-Set Fractions: 1/2, 1/4, 1/8, 1/16, 1/32, and 1/64
  • Constant Operator; Exponential notation

Tech Specs

System Requirements:
Microsoft Windows® XP, Windows® Vista, Windows® 7, Windows® 8, Windows® 10 or Windows® 11 operating system; including Microsoft Surface Pro Tablets

[+] Reviews
Overall Rating Full StarFull StarFull StarFull StarFull Star
4.9 out of 5 
User Reviews
Computer Version 5 out of 5.0
User: from Susquehanna, PA
User Rating: ★ ★ ★ ★ ★
I have been waiting for years to have this. I have used the calculator forever.

Amazing 5 out of 5.0
User: from Goose Creek, SC
User Rating: ★ ★ ★ ★ ★
This tool is amazing. It's as important to me as a hammer is. I love it.

construction master pro for windows 5 out of 5.0
User: from nc
User Rating: ★ ★ ★ ★ ★
works great on windows 10

goood 5 out of 5.0
User Rating: ★ ★ ★ ★ ★
very good

Great product 5 out of 5.0
User: , Architect AIA of HOK from Culver City CA
User Rating: ★ ★ ★ ★ ★
The desktop version of Construction Pro is an excellent tool and very easy to use.

Just what was needed 4 out of 5.0
User: , Designer from Chicago IL
User Rating: ★ ★ ★ ★
The ability to cut and paste was a nice touch.

5 out of 5.0
User: , Const. Superintendant of H&M Greenstone from Ontario, Canada.
User Rating: ★ ★ ★ ★ ★

Mind Blowing 5 out of 5.0
User: , Junior Engineer of R&B Department, J&K Govt. from Srinagar, India
User Rating: ★ ★ ★ ★ ★
I congratulate Calculated Industries for making my life simpler. I hardly have to think when dealing with feet-inch & Metre units simultaneously, be it on AutoCad or drawing X-sections of road work.

Construction Master Pro 5 out of 5.0
User: , Contractor from NY
User Rating: ★ ★ ★ ★ ★
I have been using a Construction Master IV since 2000 I always keep it close at hand in its Armadillo case. It has survived the rigors of the jobsite and has never failed to provide quick and accurate conversions and calculations whenever needed. I find myself doing a lot of work on the computer with CAD and design programs and the Construction Master IV has been left in the work shop. So I purchased the Construction Master Pro for windows. I now have the best calculator for construction projects right on my computer desktop. Both of my calculators are serving me well and are used daily in my work. I would recommend to anyone who needs fast accurate calculations to help get the job done.

5 out of 5.0
User: from Barbados
User Rating: ★ ★ ★ ★ ★

Construction MAster Pro f 5 out of 5.0
User: , Owner of Wesson Construction, Inc. from East Greenwich, RI
User Rating: ★ ★ ★ ★ ★
It is so awesome to have my Construction Master Pro everywhere now. It is usually in my work trailer or truck. Now I can use it on my PC, my phone, and at work. I use it every day. Quoting jobs, doing the jobs.... Awesome tool! Great investment.

Familiar tool 5 out of 5.0
User: , Estimator of Bay Area Custom Homes from San Francisco Bay Ar
User Rating: ★ ★ ★ ★ ★
The desktop version of Construction Pro is a familiar tool and very easy to use. Once you get the hang of using the ten key pad with your right hand and the keyboard with your left (to select feet, inches or other keys) it might be even easier to use than the actual calculator we carry on the job site. I have started to use the project tape to keep with the estimating notes as a record of my calculations. Now that I have installed the App on my phone as well I am never without this essential tool.

Construction Master Calcu 5 out of 5.0
User: , Sole Owner of South Paw design from Silverthorne, CO
User Rating: ★ ★ ★ ★ ★
I have used the hand held version for close to 20 years and the only problem was wearing out the On/Off button (could just be the cold temperatures). The computer version is sweet as I can do all my work in the comfort of my home!

Fabtastic 5 out of 5.0
User: of KRJ Design, Inc. from Warwick, RI
User Rating: ★ ★ ★ ★ ★
I've been using Construction Master Pro for years...I'd be lost without it...I keep it up in the corner of my desktop, always on while I'm working. It's invalueable.

Great Product 5 out of 5.0
User: from Reno, NV
User Rating: ★ ★ ★ ★ ★
Have been using the hand held calculator for years and purchased the laptop version which is every bit as useful.

Great Product 5 out of 5.0
User: , Journeyman Carpenter from Edmonton, AB
User Rating: ★ ★ ★ ★ ★
I have it on my phone, computer, and have a physical model and use them all. if there was one thing to change it is that every time I click on the program it opens a whole new calculator instead of going to the one that is already open. I guess that is good for having different calculations all at the same time, so it is a good thing at the same time.

5 out of 5.0
User: of DJ Custom Homes from Midland, Texas
User Rating: ★ ★ ★ ★ ★
i have the construction master calculator, using the windows version is the same as having the calculator in hand. works great

4 out of 5.0
User: , Owner of Professional Shop Drawing Services from Oak View, CA
User Rating: ★ ★ ★ ★
the product meets my expectations. i have been using a hand held product for years. now i am not in the field at all. just in the office drawing so the calculator on my computer makes drafting easier. i also convert drawings to metric and use the converter much of the time.

5 out of 5.0
User: , Owner of TRI-J Construction from Northbay - San Fran
User Rating: ★ ★ ★ ★ ★
This product I use on my Laptop as well as my Desktop. I have 4 pocket models and 2 desktop models of the same calculator, which I have used at jobs since the "80's". It is a great tool to use in conjunction with AutoCAD when draw actual size, both in the field and the office. As I have used the system for a long time, it was like seeing an old friend again when I found it to use on my computers, not to mention an other device I always had to have with me.

Construction Master Pro 5 out of 5.0
User: , Security Consultant from Damascus, MD
User Rating: ★ ★ ★ ★ ★
I think the product is Outstanding! I recommended the use of it to a company called Sketchlist which allows the user to create woodworking designs and plans.

5 out of 5.0
User: , Vice President of DMS Custom from Colorado Springs, CO
User Rating: ★ ★ ★ ★ ★

Review 5 out of 5.0
User: , Owner of Custom Carpentry from Hereford Tx
User Rating: ★ ★ ★ ★ ★
As good as all the other products at Calculated Industries. Very handy to have on computer as the calculator is usually in my pickup or job site.

PRO for Windows 4.o 5 out of 5.0
User: , Foreman of Delta United Spec. from Memphis TN.
User Rating: ★ ★ ★ ★ ★
It's just what I was looking for to lay out large radius in buildings. It did just what I wanted.

PC Version 5 out of 5.0
User: , Special Effects Shop Foreman of FXMETALWORX from Toronto, Ontario, CA
User Rating: ★ ★ ★ ★ ★
I fabricate for the film industry to an extremely tight time schedule. I currently own 3 Construction Master calculators that are in use all over the shop. I find the software version invaluable when I'm on the computer designing rigs or deciphering fabrication drawings.

An old friend - on my PC 5 out of 5.0
User: , Principal of Mountain Consulting Group, LLC from Corning, NY
User Rating: ★ ★ ★ ★ ★
I bought one of the very first CMs way back then... still have it, and still use it almost every day. The software version is fantastic, just like the handheld version but even better and more configurable. Required software for any builder/remodeler.

Product Review 5 out of 5.0
User: , Owner of East West Creations from Norhtridge, CA
User Rating: ★ ★ ★ ★ ★
I am a general contractor and I have a cabinet shop. The Construction Master Pro is a vital product for my business.

5 out of 5.0
User: , Project Coordinator of Mustang Engineering from Eunice, LA
User Rating: ★ ★ ★ ★ ★
It works just like my hand held that I keep in my truck. This way I do not need to carry my hand held around to both offices and home.

Good Windows Calc 4 out of 5.0
User: , Piping Designer from Paramus, NJ
User Rating: ★ ★ ★ ★
Good to have a Windows version of the handheld Calc I had for a few years. Would like the copy / paste to convert into numeric so I can paste into a cad program. otherwise better on my desktop than on my desk.

ci has arrived! 5 out of 5.0
User: from beaumont, tx
User Rating: ★ ★ ★ ★ ★
i bought the older version and it was great but this new version blows it out of the water. it is nice to have it on my computer. it works exactly like my calculator. now i keep my calculator in my truck where i can always find it. the tape feature is great for making sure that i entered everything ok. thanks a bunch.

[+] Support Materials