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HeavyCalc Pro

Model # 4325
Reviews (5)

Yard, Feet-Inch-Fraction, Metric
Heavy Construction-Math Calculator

Save time, eliminate costly errors, reduce material and labor expenses on all construction jobs. Built-in functions quickly find solutions for Area, Volume, Weight, Slopes, Swell, and Shrink, Cut/Fill and More! Work in and convert between all building dimensional formats, including Metric.

The most effective equipment, manpower planning and estimating tool you can own!

  • Work in and convert between Yard, Feet-Inch-Fraction and Metric formats
  • Automatically calculate Areas and Volumes
  • Square-ups and Right Angles; Percent Grade and Slope; stakeout Drops, Ramps, Trenches, much more
  • Weight per Volume (Lbs, Tons, Kg)
  • Find percent (%) Swell and Shrink
  • Simplify Cut/Fill Estimates

For: Engineers, Designers, Excavators, Highway and Heavy Construction Professionals

Dimensional Math and Conversions

  • Work in and Convert Between Any Construction-Math Formats!
  • Calculate and convert in Feet-Inch-Fractions, Decimal Yards, Feet (i.e. 10ths), Inches and Fractions, Meters and Millimeters – including Square and Cubic formats.
  • Automatically Calculate Areas and Volumes! Easily find Areas and Volumes using dedicated Length, Width and Depth keys.

Dedicated Functions

  • Square-ups and Right Angles! Percent Grade and Slope keys give you instant Right Angle solutions for Diagonals; easily stakeout Drops, Ramps, Trenches and More!
  • Weight per Volume (Lbs, Tons, Kg)! Convert between weights and find the weight of material (i.e., Tons per Cubic Yard, etc.).
  • Find Percent (%) Swell and Shrink! Quickly determine Bank, Compacted and Loose Soil Volumes for any job.
  • Simplify Cut/Fill Estimates! Built-in Cut/Fill, Existing and Proposed functions make soil-volume estimates easy.
  • “Average” Function! Speeds Grid-Cell - Cut/Fill estimates.

Timesaving “Utility” Functions

  • “Paperless” Tape! Allows you to review the last 20 entries – great for plan checks and confirming strings of dimensions.
  • Preference Setting for Fractions speed entries,
    Repeat operator (+, -, ÷, x) and Constant functions reduce keystrokes
  • Per Unit key for material costing estimates.
  • Battery-Saving Auto Shut-Off


  • Easy-to-follow User’s Guides in English and Spanish
  • Rugged Armadillo Gear Protective Case
  • Full One Year Limited Warranty
Tech Specs

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

3.2 oz. (90.7 gm) – does not include Vinyl Case or User’s Guide

Single 3-volt (CR-2016) Long Life Battery

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

LCD Display Dimensions:
0.73” x 2.56” (19 mm x 65 mm)

12 Digit Internal Accuracy

Overall Rating Full StarFull StarFull StarFull StarFull Star
5 out of 5 5
User Reviews
Tried and true 5 out of 5.0
User: , Superintendent of Advanced Environmental Solutions Inc. from United States
User Rating: Full StarFull StarFull StarFull StarFull Star
Been using for a number of years very good. Once you master the layout you will wonder why you waited so long to get one.

5 out of 5.0
User: , Const. Inspector. Highways of Conspecs Consultants Inc. from New Jersey
User Rating: Full StarFull StarFull StarFull StarFull Star
Its making my job alot easier.

5 out of 5.0
User: from MAFB
User Rating: Full StarFull StarFull StarFull StarFull Star

Enjoy using ElectriCalc 5 out of 5.0
User: from Guyana, South Americ
User Rating: Full StarFull StarFull StarFull StarFull Star
Save time and Money, get the job done.

Passed my test 5 out of 5.0
User: from Durango, Co.
User Rating: Full StarFull StarFull StarFull StarFull Star
I bought this calculator to take to my AWS Certified Welding Inspector exams. I did not miss any math or conversion questions and am now a CWI.

Armadillo Gear Soft Tool Belt Case - Orange and Black Armadillo Gear Soft Tool Belt Case - Orange and Black

Protect your calculator with this tool belt case
$14.95Armadillo Gear Soft Tool Belt Case - Orange and Black | Add to Cart
Armadillo Gear Soft Tool Belt Case - Lime Green Armadillo Gear Soft Tool Belt Case - Lime Green

High Visibility Green Tool Belt Case Protects Your Calculator
$14.95Armadillo Gear Soft Tool Belt Case - Lime Green | Add to Cart
CR2016 Battery CR2016 Battery

Replacement calculator battery


CR2016 Battery | Add to Cart

Pocket Reference Guide Spec Sheet
Play Video - Intro and How To UseIntro and How To Use
Play Video - Dimensional Math and ConversionsDimensional Math and Conversions
Play Video - Drop, Slope and Percent GradeDrop, Slope and Percent Grade
Play Video - Loose and Compacted Soil VolumeLoose and Compacted Soil Volume
Play Video - Area, Volume, Square-up Diagonal & LoadsArea, Volume, Square-up Diagonal & Loads
Play Video - D:M:S To Decimal DegreesD:M:S To Decimal Degrees
Play Video - Grid Cell Cut FillGrid Cell Cut Fill
Play Video - Paperless TapePaperless Tape
HeavyCalc Pro
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Also Available:
HeavyCalc Pro for Android  HeavyCalc Pro for iPhone 
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