Resellers Educators Inventors
Construction Calculators
Estimating & Takeoff Tools
Measuring Tools
Parts & Accessories
Blind Mark Magnetic Drywall Locators
ReadyMax Safety Glasses
Construction ProductsConstruction Products 
Industrial ProductsIndustrial Products 
Real Estate & Mortgage ProductsReal Estate & Mortgage Products 
Specialty ProductsSpecialty Products 
Measuring & Estimating ProductsMeasuring & Estimating Products 
Home & Hobby ProductsHome & Hobby Products 
Mobile Apps & SoftwareMobile Apps & Software 
 

Construction Master Pro

Model # 4065
Overview
Details
Reviews (35)
Accessories

Advanced Construction-Math Calculator

The Construction Master Pro is an award-winning advanced feet-inch-fraction construction-math calculator with powerful built-in solutions perfect for completing layouts, plans, bids and estimates. Calculate circles, roofs stairs, and more. Works in and converts between feet-inches-fractions and decimals, including metric. Use it in the field or office to save time, reduce costs, prevent re-work and maximize profits.

Construction Calculations:

  • Work in and convert between building dimensions, including Metric
  • Built-in Right-Angle solutions
  • Areas, Volumes, Square-ups
  • Complete Stair Layouts
  • Roof, Rafter and Framing solutions
  • Circle: Arcs, Circumference, Segments
  • Drywall - Siding and Panels
  • Stairs - Riser Height and solve for Stairwell Opening
  • Studs On-center
  • Compound Miter Cuts
  • Arched Rake-Walls

For Contractors, Estimators, Architects, Carpenters, Framers, Draftspersons, Engineers, Builders, Tradespersons

Dimensional Math and Conversions

  • Work in and convert between building dimensional formats: Yards, Feet-Inch-Fractions, Decimal Feet-Inches and Metric - including Area and Volume
  • D:M:S to Decimal Degree conversions
  • Find Weight per Volume

Built-in Time Saving Functions

  • Complete Stair calculations for Risers, Treads, Stringer Length and Incline Angle
  • Set Riser Height and solve for Stairwell Opening
  • Built-in Right-Angle Functions for Square-ups, Slopes and more
  • Area, Volume and Perimeter solutions with Length, Width and Height Keys
  • Drywall, Siding and Paneling Key calculates 4x8, 4x9 or 4x12 Sheets to cover an Area
  • Roof Function finds Area, Bundles, Squares and 4x8 Sheathing for Flat or Pitched Roofs
  • Custom Rafter Function provides Common Rafters, Regular and Irregular Hips, Valleys and Jacks; instant Cutting Angles (Cheek, Level and Plumb)
  • Jack Rafter results for Regular and Irregular Pitch Roof. Find Rake-Wall Studs with On-center spacing
  • Compound Miter - Store Crown Angle and Enter Wall Corner Angle to calculate the Blade Tilt and Angle for Miters cuts
  • Advanced solutions for Circles, Arches, Columns, Cones, Pillars, Windows and Post-holes
  • Arched Rake-Walls with On-center Spacing
  • Studs - Calculate the number of On-center Studs for an entered Length
  • Equal Sided Polygon - Calculate Corner and Bi-sect Angles, Side Length, Perimeter and Area
  • Block and Footing solutions
  • Board Feet Lumber estimating

Additional Features

  • User Preferences: Set custom defined options such as Fractional settings for 1/2" to 1/64" and Stair Headroom Height, Decimal Degrees and more
  • Exponential Notation: Enter and display exponential values
  • Backspace Key: Makes it easy to change just-entered values
  • Constant Operator: Simplifies repetitive calculations
  • Cost per Unit: Easily solve unit costing and pricing
  • Accumulating Memory (M+) - Plus three additional Memory Storage locations
  • Paperless Tape: Review of last 20 entries; double-check totals
  • Standard Calculations: works as a regular math calculator with +, -, +/-, x, ÷, %, π, 1/x, X2, and √
  • Automatic Shut-Off saves battery life

Includes

  • Rugged shock, dust and moisture-resistant Armadillo Gear Hard Case (Model #5022-4)
  • Pocket Reference Guides in English and Spanish
  • Two LR44 Long-Life Batteries
  • Full One-Year Limited Warranty
Tech Specs

Size:
5.7 x 3.0" x 0.65" (145 mm x 76 mm x 17 mm)

Product Weight:
4.6 oz. (130 gm)
Includes Case and Pocket Reference Guide

Power:
Two 1.5-volt (LR-44/A76) Long-life Batteries

Display Type:
11 Digits (7 normal, 4 Fractions) with Full Annunciators

Display Dimensions:
0.625" x 2.5" (16 mm x 63.5 mm)

Accuracy:
12 Digit Internal Accuracy

Overall Rating Full StarFull StarFull StarFull StarFull Star
4.94 out of 5 35
User Reviews
Super Great Product 5 out of 5.0
User: , Quality Assurance Rep of HFS / USACE from Louisiana
User Rating: Full StarFull StarFull StarFull StarFull Star
This little jewel will make you look like a hero, and is easy to use.

 
Survey 5 out of 5.0
User: , Plant Manager of Felker Brothers Corp. from Marshfield, WI
User Rating: Full StarFull StarFull StarFull StarFull Star
Nice product, returning customer.

 
All your products 5 out of 5.0
User: from Oak Park, IL
User Rating: Full StarFull StarFull StarFull StarFull Star
I'm a construction guy, my wife is the cook. We both use your products and love them. CM Pro and Pro Master Chef are excellent products

 
Construction Master Pro 5 out of 5.0
User: , Operations Dir of Stockell Gen Contr Inc from St. Louis, MO
User Rating: Full StarFull StarFull StarFull StarFull Star
Works even better than the Constr Master IV that it replaced.

 
5 out of 5.0
User: , Carpenter/ Joiner of Local Government from Ireland
User Rating: Full StarFull StarFull StarFull StarFull Star
A must have for all in the construction industry. Couldn't imagine life without it.Recomend to anyone thinking of purchasing this calculator to buy it, you won't be sorry, it will pay for itself.

 
5 out of 5.0
User: , President of Kimmel & Kimmel Inc. from Hegins, PA
User Rating: Full StarFull StarFull StarFull StarFull Star
I have been using the Construction Master Pro for years. It is very helpful out in the field.

 
0 out of 5.0
User: , Manager of Tomahawk Lumber Company LLC
User Rating:
I do rely greatly on your products and we have many contractor who do also. I have a Construction Master Pro sitting next to my key board at all times, a Construction Master Pro DT Printer and Scale Master Classic on my main desk and a Trig Plus II and Scale Master II in my briefcase. Now that I have a Droid X I'll be loading your app on it also. I don't understand how a true contractor lives without your products. I feel it's products like yours that make the difference between a Professional Quality Contractor and a wood butcher.

 
Construction Master Pro 5 out of 5.0
User: , Superintendant of Tower Arctic Ltd from Iqaluit, Nunavut
User Rating: Full StarFull StarFull StarFull StarFull Star
I'm using my Master Pro most every day. Realy nice tool easy to use.

 
Still A Great Product 5 out of 5.0
User: , President of Nuera from Calgary, AB
User Rating: Full StarFull StarFull StarFull StarFull Star
This is my second Construction Master Calculator, the first I bought many years ago. Just wanted to update and it is an invaluable tool.

 
5 out of 5.0
User: , Carpenter from New York
User Rating: Full StarFull StarFull StarFull StarFull Star
Very handy tool.

 
Awesome 5 out of 5.0
User: from michigan
User Rating: Full StarFull StarFull StarFull StarFull Star
It will be outdated soon because of computer estimating programs. However it is still great for quick calculations for small projects, and alot less expensive than the computer programs.

 
Great Product! 5 out of 5.0
User: , Office Manager of LeJack Construction from Ludlow, ME
User Rating: Full StarFull StarFull StarFull StarFull Star
I had recently married a man in the construction business. I was lost when it came to measurements. I had no experience in this profession. Now, i can easily figure pitch, width, height, etc. The dvd that came with the calculator showed me exactly how to input the data and come up with the correct answer, it was so easy to understand!

 
Steel Fabricators 5 out of 5.0
User: , Welder/Fabricator of Weldtech Fabricators Inc from Queens, NY
User Rating: Full StarFull StarFull StarFull StarFull Star
This is a great product. I have used them for the past 9 years and would not be without one. I am working with the calculator every day. They have helped in completing over 1200 projects all across New York and New Jersey!

 
5 out of 5.0
User: , Operations Manager of Redi Project Services from Lyman, Wyoming
User Rating: Full StarFull StarFull StarFull StarFull Star
It is a great calculator. It makes my job alot easier. I estimate alot of concrete work and using this saves me alot of time.

 
5 out of 5.0
User: , President of Josh Moore Construction inc. from Grass Valley
User Rating: Full StarFull StarFull StarFull StarFull Star
This is a great calculator. I have used them for the last 15 years and would not be without one. I ordered this product and it was delivered the next day I was amazed. Great company!

 
easy to use 5 out of 5.0
User: of bomax from austin, tx
User Rating: Full StarFull StarFull StarFull StarFull Star
I am happy with the purchase of this tool. Information is very accurate and I will save a lot of time in the future.

 
Draftsman 5 out of 5.0
User: from Digby , Nova Scotia
User Rating: Full StarFull StarFull StarFull StarFull Star
Could not get by with out it.

 
wow 5 out of 5.0
User: from londonderry nh
User Rating: Full StarFull StarFull StarFull StarFull Star
Wish I had this a long time ago

 
4 out of 5.0
User: of Triple M Housing Ltd from Lethbridge, Alberta
User Rating: Full StarFull StarFull StarFull StarEmpty Star
I am using it for both work and school. For work it has saved me so much time but in school we need more soft conversion than hard conversion(ex. inches to cm, or yards to metres). It would be nice if you had a calculator with this ability!

 
Calc. 5 out of 5.0
User: from Twin Falls, Idaho
User Rating: Full StarFull StarFull StarFull StarFull Star
Does all I need!

 
steel fabricator 5 out of 5.0
User: from Orlando,FL
User Rating: Full StarFull StarFull StarFull StarFull Star
The stair building section really helps.

 
A Necessity 5 out of 5.0
User: of ShattuckHouse from Colfax
User Rating: Full StarFull StarFull StarFull StarFull Star
We have used this and numerous others from CI for the past twenty years. They have helped in completing over 400 projects spanning all the USA, Canada and some even in Australia. Can's ask "Got Milk"?, but can say "Get Calc'd".

 
Pro 5 out of 5.0
User: of Scott Morton Construction from Ca.
User Rating: Full StarFull StarFull StarFull StarFull Star
I use the calculater almost every day.It does everything I need it to.

 
Industrial Form Carpenter 5 out of 5.0
User: from Beechmont Ky
User Rating: Full StarFull StarFull StarFull StarFull Star
Great Job; Does Everything I Need; Thanks

 
Construction Master Pro 4 out of 5.0
User: of Selmers bv from Beverwijk, Holland
User Rating: Full StarFull StarFull StarFull StarEmpty Star
I am working with the calculator every day.

 
5 out of 5.0
User: from Barbados
User Rating: Full StarFull StarFull StarFull StarFull Star
it a great product, it makes mountains look like mole heaps,its piece of tool everyone in the construction field must have .

 
5 out of 5.0
User: from Chicago, IL
User Rating: Full StarFull StarFull StarFull StarFull Star
It needs the other exponent button, not x2 but x-1. I am using it for the engineer field and I might buy another one (the bigger one of course). Everything else is on the money.

 
5 out of 5.0
User: of Alliance Engineering from Denver, Co.
User Rating: Full StarFull StarFull StarFull StarFull Star
I'm happy with my calculator save me a lot of time to convert fractions. I will love to buy that one with scientific calculations!!! Or you can send it to me for free 

 
construction master pro 5 out of 5.0
User: from Québec, canada
User Rating: Full StarFull StarFull StarFull StarFull Star
je suis tres tres satisfait de mon achat tres rapide et precise et evite beaucoup de calcul fastidieux je la recommande a tous !

 
5 out of 5.0
User: of Evans Brothers, Inc. from Livermore, CA
User Rating: Full StarFull StarFull StarFull StarFull Star

 
calculator 5 out of 5.0
User: from ireland
User Rating: Full StarFull StarFull StarFull StarFull Star
the calculator is excellent and the work book can help work out other problems that you didnt think the calculator could do...

 
Estimator 5 out of 5.0
User: of DELC CONSTRUCTIOL,LLC from Del Castillo
User Rating: Full StarFull StarFull StarFull StarFull Star
One of the best tool to work easy and fast, I have one long time ago it works perfect and accrate.

 
Great Product 5 out of 5.0
User: from Garden Grove, CA
User Rating: Full StarFull StarFull StarFull StarFull Star
Thank you a million times over! That's about how many times I have used it in the field to calculate all kinds of numbers in feet and inches. This gem has saved me a lot of money and is a no-brainer for anyone working in the field.

 
Lost mine 5 out of 5.0
User: from Moranis
User Rating: Full StarFull StarFull StarFull StarFull Star
and I had to get another. It's hard to believe that I am so relient on it now. This calculator is a god send.

 
Its right 5 out of 5.0
User: from Martinez, GA
User Rating: Full StarFull StarFull StarFull StarFull Star
I use it on every house. I just tote it like I do nails in my nail apron. You really need one if you are going to put rafters on a house. It's just hightly invaluvable. You figure up the measurements one time and you cut the rafters. You don't have to check them.

 
 Accessories
Armadillo Gear Soft Tool Belt Case - Orange and Black Armadillo Gear Soft Tool Belt Case - Orange and Black

Protect your calculator with this tool belt case
$14.95Armadillo Gear Soft Tool Belt Case - Orange and Black | Add to Cart
Armadillo Gear Soft Tool Belt Case - Lime Green Armadillo Gear Soft Tool Belt Case - Lime Green

High Visibility Green Tool Belt Case Protects Your Calculator
$14.95Armadillo Gear Soft Tool Belt Case - Lime Green | Add to Cart
 Parts
LR44 Battery LR44 Battery
(Construction Master Pro uses 2)

Replacement calculator battery
$2.50

LR44 Battery | Add to Cart

User's Guide Pocket Reference Guide
Spec Sheet Product Comparison Grid
Play Video - Dimensional Math and ConversionsDimensional Math and Conversions
Play Video - IntroIntro
Play Video - Area, Volume, Square-up DiagonalArea, Volume, Square-up Diagonal
Play Video - Calculating Drywall and Sheet GoodsCalculating Drywall and Sheet Goods
Play Video - Bricks, Blocks, Tiles and PaversBricks, Blocks, Tiles and Pavers
Play Video - Basic Stair LayoutBasic Stair Layout
Play Video - Riser Limited Stair LayoutRiser Limited Stair Layout
Play Video - Commons, 45/non-45 degree Hips, Valleys and Jack RaftersCommons, 45/non-45 degree Hips, Valleys and Jack Rafters
Play Video - Circular Area & VolumeCircular Area & Volume
Play Video - D:M:S to Decimal DegreesD:M:S to Decimal Degrees
Play Video - Drop or Slope CalculationsDrop or Slope Calculations
Play Video - Weights and Weight per VolumeWeights and Weight per Volume
Play Video - Paperless TapePaperless Tape
Play Video - Board Feet Lumber CostBoard Feet Lumber Cost
Construction Master Pro
Click for larger image
Construction Master Pro in Armadillo Gear Case Construction Master Pro Side View Construction Master Pro - Diag Metric Display Construction Master Pro Pocket Reference Guide Storage Construction Master Pro Counter Display
Also Available:
Construction Master Pro for Windows  Construction Master Pro for Android  Construction Master Pro for iPhone 
Online Price
$69.95
Add to Cart
[+] What are my shipping costs?
Standard Ground (3 - 9 Business Days)
FREE*

3-Day
$10

2-Day
$15

Next-Day
$25

*within the Continental U.S. AK, HI and Int'l orders will be quoted.
[+] Shop with confidence!
Secure Shopping Guarantee
Shopping with us is safe & secure.
All our products (except downloadable software) are backed up by a 30-day money-back guarantee.
View our shopping policy