Calculated Industries

Calculated Industries Tradesman Calc 4400

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  • Front face of Calculated Industries Tradesman Calc
  • Designed for trades that use technical math
  • Reference guide and online videos make using easy
  • Protective slide cover keeps the Tradesman Calc safe in your toolbox in the shop
  • Perfect for the skilled trades that require applied math
  • Comes with a hard protective slide cover, pocket reference guide and long-life battery so you can  get to work
  • Dedicated keys make doing technical trade math straightforward
For availability and pricing, call us at (267) 580-2600


Trades Math and Conversion Calculator

The Tradesman Calc is specifically designed to be useful in trades requiring technical math, including Welding, Metal Fabrication, Engineering, Automotive Service Technology, Aviation and Drafting - virtually any skilled trade requiring applied math skills.

This powerful, easy-to-use calculator helps tradesmen on the job whenever they need to use or calculate dimensional math, fractions (ruler, proper, improper, and mixed), unit conversions, ratios and proportions, trigonometry/trig and plane geometry (right triangles/angles, circular and polygonal shapes). In addition, the Tradesman Calc has a wide range of powerful math functions, including the ability to enter math equations using order of operations. You can also work with exponents, square roots, reciprocals and more.

The Tradesman Calc is easy-to-teach and easy-to-learn, making it ideal for instructors helping students in career and technical education programs develop and expand their applied and practical math skills.

Dedicated Functions:

  • Work in Architectural (ruler) fractions (1/4 inch, 1/16 inch, etc.), proper fractions (2/3), mixed number fractions (1 2/3) and improper fractions (5/3)
  • Solve dimensional math problems, and convert between U.S. and metric dimensional math units
  • Solve angle and side problems with trigonometry
  • Enter and solve circle, arc, radius hexagonal and polygonal dimensions
  • Convert between decimal and fraction
  • Enter and solve ratios and proportions
  • Enter math equations using order of operations
  • Work with exponents


  • Protective Slide Cover
  • Quick Reference and Pocket Reference Guide
  • One 3-volt long-life (CR2016) battery
  • Full One-Year Limited Warranty

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Warranty Information

Includes full one-year limited warranty from Calculated Industries
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Additional Information

5.7" x 3.0" x 0.65 inches
Product Weight:
4.15 oz. - includes Slide Cover and Pocket Reference Guide
One 3-volt (CR2016) Long-life Battery
Display Type:
15 Digits (8 normal, 7 fractions) with full annunciators
Display Dimensions:
0.73" x 2.56 inches
12 Digit Internal Accuracy
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