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Ultra Measure Master
Model 8025
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MSRP: $44.95
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[+] Overview

Professional Grade U. S. Standard
To Metric Conversion Calculator

The Ultra Measure Master is a complete and easy-to-use U.S. Standard to Metric conversion calculator for engineers, architects, construction pros, scientists and students. Convert more than 60 U.S and Metric (si) units - over 400 conversion combinations with a touch of a few buttons. No need for complex scientific calculators or memorizing conversion formulas.

[+] Details

Dimensional Math and Conversions

  • More than 60 standard and metric units built-in for fast, reliable conversions on the job or in the office
  • Over 400 conversion combinations
  • Works in and convert between feet, inches, fractions, yards, meters, centimeters and millimeters - including square and cubic formats

Dedicated Functions

  • Linear: feet-inch-fractions or yards, miles, decimal feet/inch fractions, millimeters, centimeters, meters and kilometers
  • Area: feet-inch-fraction, yards, acres, square-miles, millimeters, centimeters and meters, hectares, square-kilometers
  • Volume: cubic feet, inch, yards, acre-feet, board feet, millimeters, centimeters, meters, kilometers, miles, gallons, liters and fluid ounces
  • Weight: pounds, dry ounces, tons, metric tons, grams and kilograms
  • Weight per Volume: tons per cubic yard, pounds per cubic yard, and kilograms per cubic meter
  • Linear Velocity: inches and feet per second, feet per minute, miles per hour, minute and hour, millimeters and meters per second /minute and kilometers per hour
  • Flow Rate: ounces per second, gallons per minute, milliliters and liters per second
  • Pressure: pounds per square inch (PSI), pounds per square foot (PSF), kilo-Pascal, mega-Pascal and Bars
  • Bending Moment: inch-pounds, foot-pounds and Newton Meters
  • Temperature: Fahrenheit (°F) and Centigrade (°C).

Added Features

  • User Preferences - set custom options: Fractions, Area, Volume
  • Cost per Unit: Solve unit cost and pricing
  • Backspace Key: Easily correct entry errors
  • "Paperless" Tape: Allows review of the last 20 entries; double-check totals.
  • Standard Calculations: works as a math calculator with %, +, -, ×, ÷, +/-, π, 1/x, x2, and √


  • Protective Slide Cover

Tech Specs

5.7" x 3.0" x 0.65" (145 mm x 76 x 17 mm)

4.15 oz. (117.7 gm) - does not include Pocket Reference Guide

Single 3-Volt Lithium Battery (CR-2016)

Display Type:
LCD, 11 Digits (7 Normal, 4 Fractions) with Full Annunciators

0.73" x 2.56" (19 mm x 65 mm)

12 Digit Internal Accuracy

[+] Reviews
Overall Rating Full StarFull StarFull StarFull StarFull Star
4.96 out of 5 
User Reviews
Great for engineering 5 out of 5.0
User: , Mechanical Designer from New York
User Rating: ★ ★ ★ ★ ★
As a mechanical designer I convert a lot of dimensions from metric to English. This is by far the best calculator I have bought. I am on my second one. I use my old one at home.

Positive Review 5 out of 5.0
User: , CAD Tech/Designer of CADCO Arch.-Engin.,Inc. from Abilene, Texas
User Rating: ★ ★ ★ ★ ★
Excellent calculator. Have worn out three previously, and I use it daily. Bought one for an associate, he likes it, also.

Great converter! 5 out of 5.0
User: , Sect'y - Treas. of Karidis Imports, Inc. from Santa Monica, CA
User Rating: ★ ★ ★ ★ ★
This is an excellent product, especially if you work a lot with European companies that do everything in Metric.

5 out of 5.0
User: of Unipro Architects, Engineers and Planners from United States
User Rating: ★ ★ ★ ★ ★

5 out of 5.0
User: , Director of Architectural sales of Rulon International from Phoenixville, Pa
User Rating: ★ ★ ★ ★ ★
An essential tool both in the office and on job sites.

5 out of 5.0
User: , Project Manager of Tuscarora Construction Co. from Pulaski NY
User Rating: ★ ★ ★ ★ ★
This is my second umm very good tool as my home state of NY uses both US and metric measure for road and bridge work. I wouldnt be without one

Excellent 5 out of 5.0
User: from Jacksonville, NC
User Rating: ★ ★ ★ ★ ★
Excellent Product

Great 5 out of 5.0
User: , Project Managing Assist. of AWD Sales & Service, Inc. from United States
User Rating: ★ ★ ★ ★ ★
This is a great product. I have used it for years.

Quick coversions 5 out of 5.0
User: from Edina Minnesota
User Rating: ★ ★ ★ ★ ★
I often have to covert to grams, liters, yds to miles, etc. It is quick and easy. I LOVE this product. I studied Advanced Algebra a year ago; all word problems. It was indispensible!

User Rating: ★ ★ ★ ★ ★

Greatest Calculator! 5 out of 5.0
User: , Interior Designer of Freelance from Thailand
User Rating: ★ ★ ★ ★ ★
It helped me to convert Feet and Inches to MM to CM in all of my jobs here in Thailand. Thank you so much, not to speak about the conversion for gas, liters, and bakery for even tons and grams, for 306 star hotel bakery equipments needed:) Thank you!

The Calculator is Great. 5 out of 5.0
User: from New York, NY
User Rating: ★ ★ ★ ★ ★

Ultra Measure Master 5 out of 5.0
User: of Boswell Engineering from Albany, NY
User Rating: ★ ★ ★ ★ ★
Great Product works fast and accurate.

My Companion 5 out of 5.0
User: of The Austin Company from Atlanta, GA
User Rating: ★ ★ ★ ★ ★
I sit in meetings with SI and English measurements flying around and I am the only one not getting lost. Nice to be able to convert on the fly. Using negative temperatures is a problem I need to read up on. Everything else is intuitive. I have used these gadgets since the very first one was sold years ago.

Suggestion 5 out of 5.0
User: of JF Brennan from La Crosse, WI
User Rating: ★ ★ ★ ★ ★
Would be better if more than 8 digits were displayed and were comma separated.

5 out of 5.0
User: of mcvac environmental from new haven ct.
User Rating: ★ ★ ★ ★ ★
I found that the calculator was helpfull however if there is a book with calculations that you offer i would be very interested

What a time saver 5 out of 5.0
User: from Bronx, NY
User Rating: ★ ★ ★ ★ ★
As an inspector in the engineering field, I am always converting measurements. This calculater has made my job much easier. I highly recomend it.

Quality Converter 5 out of 5.0
User: from Sutton Coldfield, UK
User Rating: ★ ★ ★ ★ ★
Just what I have been looking for. It gives me all the functions I require to convert between Imperial and Metric measurements I use in our curtain making and fitting business over here in England.

Few more scientific funct 4 out of 5.0
User: from Poland, Ohio
User Rating: ★ ★ ★ ★
Improvement over a previous version I had since 2002, but would be nice to see a few more scientific functions.

??? 5 out of 5.0
User: from Sugar Grove, IL
User Rating: ★ ★ ★ ★ ★
I like the secret compartment in the back to hold the directions. Besides that, it works well. I noticed that for some reason, it is much easier to key in calculations than my old pocket handyman II even though it is the exact same action. Maybe it has to do with bigger keys??

I LOVE IT 5 out of 5.0
User: from HOUSTON,TX
User Rating: ★ ★ ★ ★ ★

field use of calculator 5 out of 5.0
User: of Quicksilver Resources from Fort Worth, TX
User Rating: ★ ★ ★ ★ ★
very user friendly & helpful in field engineering calculations!

5 out of 5.0
User: from Santa Cruz, Ca.
User Rating: ★ ★ ★ ★ ★
Functional, easy to use, good packaging. I have one of your calculators from around 1991 and it still works fine.

5 out of 5.0
User: from NY
User Rating: ★ ★ ★ ★ ★

5 out of 5.0
User: , Controller of Tamietti Construction from Great Falls, MT
User Rating: ★ ★ ★ ★ ★

[+] Download the App

[+] Parts & Accessories
Armadillo Gear Hard Case - Green and Black Armadillo Gear Hard Case - Green and Black

Green case with rubber base and hard plastic cover protects a calculator ensuring it is safe and secure.
Armadillo Gear Soft Tool Belt Case - Orange and Black Armadillo Gear Soft Tool Belt Case - Orange and Black

Nylon Armadillo Gear® Tool Belt Case is large enough to hold both a calculator and its protective cover.
Armadillo Gear Soft Tool Belt Case - Lime Green Armadillo Gear Soft Tool Belt Case - Lime Green

High visibility green tool belt case large enough to hold and protect a calculator and its protective cover.
CR2016 Battery CR2016 Battery

Calculator replacement battery.

[+] Support Materials

Pocket Reference Guide
Spec Sheet

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