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calculated 4020
Ideal for faster more accurate material estimates (view larger).

Get professional results every time with the handy, easy-to-use tool Measure Master Pro measurement conversion calculator (model 4020) from Calculated Industries. It's ideal for designers, craftsmen, tradespersons, fabricators, woodworkers, and technicians for on-the-spot calculations, and it fits easily in a pocket, briefcase, or tool pouch.

Built-in functions make the Measure Master Pro ideal for faster, more accurate material estimates. Work in and convert between dimensional formats including feet-inch-fractions, decimal feet-inch-fractions, yards, meters, centimeters and millimeters as well as areas and volumes. You'll also be able to quickly find board feet for lumber estimates and solve for circumference, circle area, and arcs.

Other features include solving for cost per unit, a "paperless" tape that lets you review the previous 20 entries to double-check your totals, ability to store preferred fractional values and dimensions, and work with standard calculations.

It's powered by two LR44 batteries, and the Measure Master Pro has an auto shut-off feature that turns the calculator off after about 8 to 12 minutes of non-use. The calculator measures 2 x 5.6 x 0.6 inches, weighs 4.5 ounces, and comes with a hard protective cover. It's backed by a one-year limited warranty.

What's in the Box

Calculated Industries 4020 Measure Master Pro measurement conversion calculator; protective hard slide cover; pocket reference guide (English/Spanish); batteries

At a Glance
4020 Measure Master Pro Measurement Conversion Calculator At a Glance:
  • On-the-spot calculations for designers, craftsmen, woodworkers, and more

  • Work in and convert between dimensions, area, and volume--including metric

  • Fits in a pocket, briefcase or tool pouch

  • Powered by two LR44 batteries

  • One-year limited warranty
At a Glance


  • EASILY CONVERT between dimensional formats including U.S. Imperial and metric to help you work with material and plans from Global suppliers regardless of the measuring units used; with a push of a button The calculator can change them into the measurement types you prefer to work in
  • HELPS YOU CALCULATE jobsite solutions in Metric and Imperial units using linear, Area and volume measurements; Measure Master Pro makes these calculations even easier because you enter the numbers just as you say them; simply Factor in your waste allowances and you’ll have just what you need to build
  • BUILT-IN CIRCULAR MATH gives you formula-free circles, areas, circumference, radius and arcs to layout a circular driveway, get requirements for a curved deck or determine measurements for a gazebo arch; with this information you can build according to plan
  • SOLVE UNIT COST AND PRICING by finding total material requirements then solve for total cost by entering unit cost; great for estimating. And the built-in paperless tape lets you double-check Your entries for accuracy – without having to re-enter values
  • YOUR DAILY PROBLEM-SOLVER TOOL lets you handle anything that comes your way, dimensional Math, unit conversions, board feet material estimating and more. And it comes with a protective hard slide cover, easy-to-follow pocket reference guides in English and Spanish, long-life batteries and a 1-year warranty
  • Work in and convert between any building dimensions, including metric
  • Linear, area and volume measurements
  • Find weight and weight per volume
  • Instant solutions for circle area, circumference, arcs and more
  • EASILY CONVERT between dimensional formats including U.S. Imperial and metric to help you work with material and plans from Global suppliers regardless of the measuring units used; with a push of a button The calculator can change them into the measurement types you prefer to work in
  • HELPS YOU CALCULATE jobsite solutions in Metric and Imperial units using linear, Area and volume measurements; Measure Master Pro makes these calculations even easier because you enter the numbers just as you say them; simply Factor in your waste allowances and you’ll have just what you need to build
  • BUILT-IN CIRCULAR MATH gives you formula-free circles, areas, circumference, radius and arcs to layout a circular driveway, get requirements for a curved deck or determine measurements for a gazebo arch; with this information you can build according to plan
  • SOLVE UNIT COST AND PRICING by finding total material requirements then solve for total cost by entering unit cost; great for estimating. And the built-in paperless tape lets you double-check Your entries for accuracy – without having to re-enter values
  • YOUR DAILY PROBLEM-SOLVER TOOL lets you handle anything that comes your way, dimensional Math, unit conversions, board feet material estimating and more. And it comes with a protective hard slide cover, easy-to-follow pocket reference guides in English and Spanish, long-life batteries and a 1-year warranty
  • Work in and convert between any building dimensions, including metric
  • Linear, area and volume measurements
  • Find weight and weight per volume
  • Instant solutions for circle area, circumference, arcs and more

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