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Calculated Industries 4020 Measure Master Pro Measurement Conversion Calculator

4.8 out of 5 stars 99 customer reviews

List Price: $39.95
Price: $33.90 & FREE Shipping on orders over $49. Details
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  • Get professional results every time with the handy, easy-to-use tool
  • It's ideal for designers, craftsmen, tradespersons, fabricators, woodworkers
  • Built-in functions make the Measure Master Pro ideal for faster, more accurate material estimates
  • 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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Product Description

Product Description

Great for designers, woodworkers, craftsmen, technicians, etc. Calculates directly in feet, inches, fractions, yards, meters, centimeters, and millimeters, including square or cubic formats of each. Converts to and from all dimensional formats instantly. Instant solutions for circumference, circle area and arc lengths. 1 button solves postholes, columns, pillars, arches and much more. Weight per volume key allows you to find weight of material (i.e., tons per cubic yard, kilograms to pounds, etc.). Custom set fractions. Estimate material costs. Paperless tape allows you to review last 20 entries.

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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

Product Information

Technical Details

Part Number 4020
Item Weight 7.2 ounces
Product Dimensions 5.8 x 3 x 0.6 inches
Item model number 4020
Batteries 2 LR44 batteries required. (included)
Power Source battery-powered
Voltage 1.5 volts
Item Package Quantity 1
Batteries Included? Yes
Batteries Required? Yes
Warranty Description Calculated Industries warrants product against defects in materials and workmanship for a period of 1 year. If a defect exists during the warranty period, CI at its option will either repair or replace the product at no charge

Technical Specification

Additional Information

ASIN B0008F0YXK
Customer Reviews
4.8 out of 5 stars 99 customer reviews

4.8 out of 5 stars
Best Sellers Rank #9,620 in Home Improvements (See top 100)
#8 in Electronics > Office Electronics > Calculators > Financial & Business
#9,384 in Office Products > Office Supplies
Shipping Weight 9.6 ounces (View shipping rates and policies)
Date First Available November 9, 2004

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Stephen J. Dinka on August 30, 2008
This is a great calculator for anyone that uses a tape measurer in fraction of inches as I do. I'm a cabinet maker and I replaced my old one after about ten years. This one calculates up to thirty seconds of a inch. At least that is as far as I've gone with it so far. You can do inches, mm, cm, ft, bd ft, yds, convert from all of the above, etc. etc. It has more features then I will ever use and it comes with a nice slip on hard cover and a instruction manual pocket. I highly recommend it.
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Calculated Industries has always been my favorite when it comes to construction based calculators. Lately, however, it seems that they have so many different models to choose from that it makes the buying process a little difficult. This model was the perfect fit. It has all of the basic options that a standard user will need. It doesn't have trig functions or stair caluculations, but most of us won't need those things.

The best thing with this model is that while it is still pocket size, the keys are just a little bit larger than on some other models. This makes it so much easier to hit the right keys the first time.

Overall this is a great construction calculator and the best for the money.
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Verified Purchase
This is a good product that does exactly what I expected.

But, it only came with a Spanish language User Guide, which is obviously a packaging error because everything else, including the box, is in English. When I registered the product with Calculated Industries I requested an English version, but I'm still waiting and it's been several months.

The "electronic paper tape" is useful for review of entries, but it would be much more useful if it allowed individual entries to be edited. Unfortunately, you have to re-enter the entire list if there is one error. I also have an HP 17BII business calculator (that died after 20 years) which keeps long summation lists in memory, and allows editing of individual entries, so I have become accustomed to that feature.

But except for these few issues, I'm pleased with this calculator.
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Verified Purchase
Wish I bought this calculator sooner. I'm a designer and I always find myself converting and calculating measurements all day long. Its great to be able to do all that in one easy to use calculator. I love the color coded buttons too.
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Verified Purchase
I'm a huge fan of Festools. They are very accurate woodworking tools, with very precise measurements - all in *metric*. Out of desperation, i got this 4020 conversion calculator. It's terrific. you enter 19 11/32; then hit "mm" and you get the conversion, etc. just that simple. Of course its capabilities go far beyond this simple example, but this is all i need it for. It's designed to do materials estimation, 3-d dimension calculations, area, weight and volume, etc. It's really a general purpose constuction and estimating calculator - none of the latter features of which I use. I have this tucked into the apron of my rockler clamp stand and use it all the time for basic millwork.

There are several features that I like: (1) it uses a 2032 battery which is inexpensive and easy to find), (2) it has a reversible dust cover to cover the keyboard when not in use, (3) it has a cute little slot in the back that holds the instruction book (neat idea), (4) the keys stand proud of the panel and are well-separated so i don't have a problem with 'fat fingering', (5) I like the one-key conversion design - very simple and straightforward to avoid errors, (6) display is large and has adequate contrast.

Recommended.
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Verified Purchase
I bought one for me to use at work. A colleague kept borrowing it, so we bought him one.

A couple weeks later I can say we just keep buying them, now almost everybody in our office owns one.

We deal with Europeans a lot, so quick conversions are crucial for our day to day business. Additionally, adding ft and inches is a breeze with this little guy.
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This is a good calculator for metric conversion. The only thing I wish was available was micro m/L and kilo m/L. Am very happy with product.
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Verified Purchase
I work in a cabinet shop. I have a different calculator from this company, but the plastic piece that holds in the battery is broken and the tape I have been using to hold it in, is not working very well anymore. I think the battery contact is worn out on it. I needed a calculator that will figure down to 1/16ths, and this one seems to work well for that. Looking forward to having a calculator that works all the time when I need it to again.
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