Calculated Industries Construction Master Pro Calculator

List Price: $74.95
Our Price: $67.46
Savings: $7.49 (10%)


The Construction Master Pro is an award-winning advanced feet-inch-fraction construction-math calculator with powerful built-in solutions 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
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
•Rugged shock, dust and moisture-resistant Armadillo Gear case
•Pocket Reference Guides in English and Spanish
•Two LR44 Long-Life Batteries
•Full One-Year Limited Warranty
Tech Specs
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
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)
12 Digit Internal Accuracy


  • UPC: 098584040659
  • Weight: 1 pound
  • Dimensions: 8.25 × 6 × 1.25 inches