The Only Calculator Designed Specifically for Heavy Construction Pros, Excavators & "Dirt" Contractors!

At the estimating table, in the truck or on every crew member's tool belt, the HeavyCalc helps get every job done right the first time! Quickly master the following construction problems, in the office or out in the field.

Quickly & easily figure:
-Areas & volumes
-Weights
-Cut/fill estimates
-Shrink & swell
-Percent grade
-Right angle solutions and square-ups
-Cost & material estimations
-Dimensional math & conversions
-Even handles fractions-1/2's, 1/4's, 1/8's, 1/16's, 1/32's, 1/64's

Features:
Area & Volume Calculations
   Prevent errors & save keystrokes with automatic calculation of area and volumes.
   Length, Width, Depth, Area & Volume keys allow for fast & accurate material estimates.
Weights
   Lets you convert between weights (lbs, tons, kg) and find weights of any material (e.g.,
   tons per cubic yard). Figure truckloads and weights and improve your bottom line.
Existing, Proposed & Cut/Fill Keys
   Simplifies soil-volume cut and fill estimates.
Shrink & Swell
   Solve Bank, Compacted and Loose soil volumes for any job.
Percent Grade and Slope
   Instant right-angle solutions for finding diagonals, square-ups, and staking-out drops,
   grades, ramps, drainages, trenches, and more! No more formulas or memorization of
   Pythagorean theorem!
Average Function
   Speeds grid-cell cut/fill estimates.
Dimensional Math & Conversions
   Works in all dimensional formats: quickly add, subtract, multiply, divide and convert in
   feet-inches-fractions, decimal feet, decimal inches, inches and fractions, yards, meters,
   millimeters, board feet, as well as square and cubic formats.
Handles all fractions-1/2's, 1/4's, 1/8's, 1/16's, 1/32's, 1/64's
   Work in fractions for all sorts of dimension problems. You can even set fraction
   denominators to display your desired accuracy (in above fraction formats).
"Smart" Fraction Setting
   Saves keystrokes by entering preset fraction denominators for you, from 1/2 to 1/64.
Paperless Tape
   Lets you review the last 20 entries, for double-checking answers.
Standard Calculator
   Works as a regular math calculator, for your everyday math needs.

Technical Specifications:
Size:
   5.5 x 3.0 x 0.5" (140 x 76 x 13 mm)
Product Weight (product only with battery):
   3.2 oz. (91 g)
Power:
   3-volt lithium (CR-2032) battery (included)
Bat. Life:
   Approx. 800 hours usage
Auto Shut-off:
   8-12 min.
Keypad:
   42 keys; soft-touch silicone rubber
Case:
   Vinyl with magnetic attachment and pocket for User's Guide; black.
Operating Temperature:
   32-130 deg. F (0-55 deg. C)
Display Type:
   LCD segment; 11 digits (7 normal, 4 fractions), with annunciator-legends
Display Dimensions:
   0.86 x 2.5" (22 x 64 mm)
Accuracy:
   10 digit internal accuracy