Calculated Industries Construction Master 5-4050 at The Home Depot
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Calculated Industries

Model # 4050

Internet # 100324426

Store SKU # 480020

Construction Master 5

Calculated Industries Construction Master 5

This item has been discontinued.
The Home Depot no longer carries this specific product.

$39.97 / each
Item cannot be shipped to the following state(s): AK,GU,HI,PR,VI


Model # 4050

Internet # 100324426

Store SKU # 480020

The Calculated Industries Construction Master 5 Calculator is an essential construction math tool for building professionals. Built-in functions quickly solve a variety of calculations, including linear, area and volume calculations, and includes user guides in English and Spanish.

  • Works in inches, feet, fractions and decimals
  • Linear, area, volume, circle, arc, column, cone, pillar, window and post-hole calculations
  • Stair calculations for risers, treads, stringer length and incline angles
  • Determines measurements for common rafters, regular and irregular hips, valleys, jacks and on-center spacing
  • Rake-wall function finds stud lengths for on-center spacing
  • Solves weight per volume and unit costing and pricing
  • Performs standard math calculations and lumber estimating
  • User preferences for setting custom options such as fractional settings
  • Paperless tape makes it easy to review the last 20 entries to double-check totals
  • Backspace key helps you change recently entered values
  • Automatic shutoff saves battery life
  • Includes a battery
  • Standard math calculations

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Assembled Depth (in.)  1.0 in  Assembled Height (in.)  11.25 in 
Assembled Width (in.)  7 in  Batteries Included  Yes 
Battery Type Required  One 3-volt (CR-2016) battery  Hand Tool Type  Calculator 
Manufacturer Warranty  One-year limited warranty  Number of Batteries Required 
Returnable  90-Day  Solar Powered  No 


Rated 4.8 out of 5 by 17 reviewers.
Rated 5 out of 5 by Great Construction calc Great calculator for the field and for the office. Takes some practice learning all the functions but will be a great addition if you were thinking about spending the money. I use it all the time now that I own one of these. great investment. October 29, 2013
Rated 5 out of 5 by Great tool An essential tool for the do it yourselfer or the construction-remodeling professional August 28, 2013
Rated 5 out of 5 by Construction Calculator A must have if you do. A lot of material Estimating. September 16, 2014
Rated 5 out of 5 by Perfect tool for conversions I recently bought several Festool products which are German made, so all the scales on these tools are shown in the metric system. I purchased this calculator to do the conversions from metric to Imperial because that's the system I'm more familiar with. It's extremely easy to use, you simply input the number you want to convert in millimeters, hit the inch key and your done, obviously it also works converting inches to millimeters . The screen is large, so even if you wear glasses for reading you'll have no problem seeing the numbers. This unit can also be used for just about any calculation you can think of when it comes to construction projects. Way too many to list here! July 12, 2013
Rated 5 out of 5 by Amazing & The Best Our company is a rebar fabricatoring shop. This calculator helps when setting the plans we do for out jobs. If we need to calculate feet or inches, this does it al. Works great, no issues, last one we owned lasted a very long time. Worth the price. July 15, 2014
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