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Dimensional Math and Conversions
4065 4225 4325
Yards, Feet-Inch-Fractions
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Decimal Feet (10ths, 100ths), Decimal Inches 
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Preset Fractions (1/2" through 1/64") 
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D:M:S, Decimal Degree Entry and Conversions 
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Full Metrics (m, cm, mm) 
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Right Angle Solutions
Complete Right Angle, Roof and Rafter Calculations 
Pitch, Rise, Run 
Complete Framing Calculations 
Stair Layouts 
Stairs (Advanced — User set Riser limit, Stairwell opening) 
Diagonal Key/Common Rafter 
Square-up 
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Area and Volume Solutions
Length, Width and Height (Depth) Keys 
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Square and Cubic 
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Column/Cone Area and Volume 
Basic Circular Calculations 
Advanced Circular Calculations 
Weight per Volume (Pounds, Kilograms, Tons, Metric Tons) 
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Blocks 
Footings 
Special Functions
Board Feet 
Equal Sided Polygon 
Rebar (total linear feet, Weight for Sizes, Inset, On-center spacing) 
Loads (number of truckloads based on load size) 
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Bags (number of bags based on fill volume) 
Bank, Compact, Loose, % Shrink/Swell
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Cut/Fill
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Works as a Regular Calculator ( and ) 
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User-Definable Preferences 
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Entry Editing Backspace Key 
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Cost per Unit (Total costs based on unit price) 
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Additional Capabilities and Characteristics
Paperless Tape 
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Number of Memories 444
Automatically Calculate
Areas and Volumes using
dedicated Length, Width
and Height keys
Drop and Square-up
for layouts for Pads, Ramps,
Trenches and more
Percent Grade and Slope
keys give you instant Right
Angle solutions
Work in and convert
between Feet-Inch-Fractions,
Decimal Yards, Feet, Inches
and Fractions, Meters,
Centimeters and Millimeters
Loads — instant solutions
for Load Volume, Number
of Loads and Load Size
Cut/Fill Estimates
are simplified —
Proposed and Existing
Tape — Paperless Tape;
review last 20 entries
Conv — Perform
conversions; access
secondary functions
Stor/Prefs — Store, set and
change preferences and
default values (i.e., fractions)
Shrink and Swell
calculations using Comp,
Bank and Loose Volumes
Backspace Key —
Easily edit entries
Fast, Accurate Solutions for Building Professionals
MODEL 4325
Yard, Feet-Inch-Fraction, Metric
Heavy Construction-Math Calculator
ENGINEERS • DESIGNERS • EXCAVATORS • HIGHWAY AND HEAVY CONSTRUCTION
Dedicated Keys and Functions Make It Easy To Use
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Calculator Features:
HeavyCalc™ is a trademark and Construction Master® and Calculated Industries® are
registered trademarks of Calculated Industries, Inc. © 2011. All rights reserved.
4325-SPEC-4C-01_11