Sixteenth: Construction Math

Sixteenth is a construction calculator that works in feet, inches and fractions, the way you read a tape. Type 12' 3-5/8" + 4' 7-1/4" and get 16' 10-7/8", rounded to the sixteenth or whatever precision you set. THE CALCULATOR • Feet, inches, yards and fractions from 1/2 to 1/64, plus metric • Square and cubic entry: tap ft twice for ft², three times for ft³ • Pitch, rise, run and diagonal keys to solve any right triangle • Percent, memory (M+, M−, MR), repeat equals, trig, square root and π • A tape of every calculation. Edit any line, reuse a result, save named memories TRADE TOOLS (20+) • Stairs: risers, treads, stringer length, framing square settings, marks along the stringer, headroom and IRC checks • Rafters: common, hip/valley and jacks, plumb and seat cuts, birdsmouth with heel and HAP • Wall studs with layout marks you can read straight off the tape • Rake walls, roofing squares and shingle bundles • Right triangle and pitch, arcs and circles, polygons • Concrete slabs, footings and tubes in cubic yards and premix bags • Rebar grids, board feet and material weight • Drywall and sheathing with tape, mud and screws • Decks, fences, paint, flooring and tile • Compound miter and crown molding saw settings CUT LIST Enter the pieces you need and the lengths your yard sells. Sixteenth finds the fewest boards to buy and maps every cut on every board, kerf included. JOBS AND QUOTES Save results to a job and Sixteenth builds the material list for you. Add unit prices and sales tax for a total, then send the job as a clean PDF or as text to your client or supplier. BUILT FOR THE JOB SITE • Glove mode with bigger keys • Sunlight mode for reading outdoors, plus dark theme • Voice input: say "twelve feet three and five eighths plus four feet seven" • Works offline. No account, no ads • English and Spanish SIXTEENTH PRO The calculator, all the tools, voice input and the tape are free. Sixteenth Pro is a one-time purchase, not a subscription, and adds: • Unlimited jobs • Prices, sales tax and totals • Unlimited PDF and text exports • Saving cut lists to jobs Always double-check critical dimensions and follow your local building code. Questions or a tool you'd like to see? [email protected]

First release of Sixteenth: feet-inch-fraction calculator, 20+ trade tools, cut list, jobs with PDF quotes, glove and sunlight modes, voice input, a built-in guide (hold any key for help), English and Spanish.