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Transparent construction calculator, 5.6 by 3 inches, 11-digit LCD display

CALCULATED INDUSTRIES

CALCULATED INDUSTRIES 4020 Construction Calculator 11-digit educational supply

SKU CH-TFJ1-SG1ZB MPN 4020

Handles construction math with feet-inch-fraction conversion, area, volume and arc functions; 11-digit display shows last 20 entries

  • Product typeCalculators & Accessories
  • Key featuresCost per Unit: Solve unit cost and pricing "Paperless" Tape:
  • Product colorTransparent
  • Size details5.6 in × 3 in × 0.6 in
  • DetailsPower: Two 1.5-volt LR44/A76 long-life batteries Display Typ
  • Converts feet, inches, fractions and metric units instantly
  • 11-digit LCD shows 7 whole digits plus 4 fractions clearly
  • Paperless tape recalls last 20 entries for quick double-checks
  • Cost-per-unit key solves pricing and unit cost on site
  • Standard math functions plus π, square, square root and reciprocal

Purpose-built construction calculator

The Calculated Industries 4020 is an 11-digit handheld calculator designed for construction professionals, woodworkers and tradespeople who need fast dimensional maths on site. It converts between feet, inches, fractions, yards, metres, centimetres and millimetres, and solves area, volume, circumference, arc length and weight calculations. A paperless tape reviews the last 20 entries for quick verification.

Check your workflow fit

Verify that you require fractional-inch resolution down to 1/64 and metric conversion rather than a standard scientific or financial calculator. The 11-digit LCD shows seven integer digits plus four fraction digits, so confirm that precision matches your estimating and layout tasks. Power comes from two 1.5-volt LR44/A76 batteries, which are user-replaceable.

Build-around considerations

The transparent case measures 5.60 by 3.00 by 0.60 inches, making it pocket-portable for field use. Dedicated keys handle cost-per-unit pricing and the paperless tape function without external accessories. No computer link or software is included, so data stays on the device. Buyers needing programmable functions, graphing or connectivity should look elsewhere.

How it compares

Measured against everything we stock in Calculators & Classroom Supplies, at today’s prices. Recalculated every night.

Price $26.99
Typical for this category: the median of 1,255 items is $25.99.

Specifications

Product
Brand nameCalculated Industries
Model name4020
Product typeCalculators & Accessories
Product colorTransparent
Size & build
Size details5.6 in × 3 in × 0.6 in
Shipping weight0.23 kg
Package size152 × 76 × 13 mm

Questions about this item

What comes in the box with the 4020 and do I need to buy batteries separately?

The calculator includes two 1.5-volt LR44/A76 long-life batteries so it is ready to use immediately.

Which fraction resolution should I choose for construction layout work?

The display converts fractions down to 1/64 so you can read and enter the finest increments used on site.

How does the 11-digit display help when I am calculating material volumes?

Seven normal digits plus four fraction digits let you see large cubic results and precise fractions at the same time.

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