Construction Calc Lite vs Carpenter's Calculator

Designed by tradespeople, for tradespeople. Construction Calc Lite handles the heavy lifting of jobsite math—fractions, dimensional conversions, framing, and layout—so you can focus on the build. Whether you're a carpenter, concrete finisher, framer, superintendent, or DIYer, Construction Calc Lite delivers fast, accurate jobsite calculations with zero guesswork. WHY TRADES CHOOSE CONSTRUCTION CALC • True Feet-Inch-Fraction Math: Add, subtract, multiply, and divide in full dimensional fractions down to 1/16th (or user-set precision) with automatic reduction. • Seamless Unit Switching: Effortlessly mix Imperial and Metric. Convert feet-inch-fractions to meters, centimeters, or millimeters in a single tap. • Split-Screen Display: View decimal values, feet/inch fractions, memory registers, and scale factors simultaneously in large, high-visibility text. • Visual Cut & Layout Solvers: Dedicated modules for right triangles, miters, arcs, and baluster spacing complete with clear visual diagrams. • 50 Memory Registers & Full History: Never lose a cut list or measurement. Easily recall previous calculations on the fly. DEDICATED MODULES FOR EVERY TRADE • Framing & Layout: Calculate stud, fence post, and baluster spacing (horizontal, angled, or circular). • Miters & Trim: Visual miter and bevel angle calculator for crown molding and finish carpentry. • Geometry & Stairs: Instant solutions for right triangles, diagonals, rafter lengths, arcs, and chords. • Concrete, Volume & Area: Quickly calculate slab volume, footings, room square footage, and block/tank capacities. • Materials & Coverage: Estimate drywall sheets, tile, paint, and material costs with built-in waste allowances. • Smart Blueprint Scaling: Instantly scale plan drawings up or down to true field dimensions. BUILT FOR THE JOBSITE • High-Contrast Display: Large, legible fonts engineered for bright outdoor sunlight or dark crawl spaces. • Works 100% Offline: No cell service required on remote sites.

Working with US Customary units (feet and inches) often involves measurements in fractions of an inch, and therefore mixed-number arithmetic. For example: you need to rip 6 planks at 3 5/16" width each. Your saw blade kerf is approximately 1/8". To figure out how much width you need in total, you'd do 6 * (3 5/16 + 1/8). You can do this in your head, but it's easy to make a mistake -- and if you add any more complexity, it becomes a challenge. You can do it on paper, but that's a bit cumbersome for such a simple operation. With the Carpenter's Calculator, it's easy. Even if you're not a woodworker and uninterested in using fractions or mixed numbers, this calculator should offer you just about everything that the built-in iOS calculator offers, but with a feel closer to a traditional scientific or graphing calculator. It also stores your last 20 expressions and results, which makes it very easy to do slightly more complex calculations without needing to whip out a pencil and paper.