This app isn't in any of our charts yet.
• Start, duplicate or resume a job from Project home. • Keep a recovery copy before switching projects. • Calculate materials independently of building dimensions; save project material lists and export PDF/CSV. • Use cutting focus for the next piece, completion and Undo. • See measurement guides when entering dimensions.
Calculate units, roofs and stairs. Plan materials, timber cuts and purchases.
Construction Calc Calculate with units, review roof and stair geometry, then bring timber quantities into cutting and purchase lists. Keep the job together in Construction Calc. Work through the job with fewer interruptions • Return to favorite and recently used calculators, or search using jobsite keywords. • Choose the keypad or keyboard when entering dimensions. • Filter the cutting list by remaining work or material and find the next piece. • Mark cuts complete without rearranging the plan; undo completion changes when needed. Find calculators by task or search, open input help where you need it, and calculate dimensions directly with unit-aware expressions. Calculate with units • Enter metric dimensions, feet, inches and fractional inches. Work with length, area, volume and mass. • Combine units in arithmetic, parentheses, square roots and trigonometric functions. Choose fractional-inch display precision. Work through roofs and stairs • Calculate common rafter lengths, plumb and level marks, bearing seats and remaining depth after a notch. • Calculate hip, valley and jack geometry with unequal roof pitches, jack cheek cuts and compound cuts for crown molding laid flat. • Account for floor finishes in stair rise, going, nosing, stringer cuts and remaining throat. Check headroom and the required opening. • Review dimensioned diagrams and export drawings as PDF or SVG. Turn materials into cut and purchase lists • Bring wall, floor and roof timber quantities into shared schedules. • Add reviewed roof-corner parts to the existing roof, or replace its parts, and carry the result into cutting and purchasing. • Set multiple stock lengths, available quantities, prices and saw kerf for each material. Compare candidate plans by offcut, cost or piece count. • Mark completed cuts and share quantities, cut lists and purchase lists as CSV or PDF. Handle everyday takeoffs • Estimate wall and ceiling boards, flooring and masonry units, concrete, straight fences and equally spaced members. • Enter opening deductions, joints, waste, purchase units and prices for the task. • Save projects and settings, with undo for changes. Roof-corner geometry assumes perpendicular eaves at the same elevation. It does not automatically design a complete hip roof. Quantities and cut candidates are plans based on your inputs, without a guarantee of the lowest cost or fewest pieces. Check structural sections, connections and local requirements separately. Drawings are scaled to the page and are not full-size cutting templates. One-time purchase, all features included All features described here are included in the one-time app purchase. No additional in-app purchases or subscription are required. This includes basic, roof, stair and concrete calculations, part quantities and their exports, creating and recalculating material-group cut plans, cut-completion checks, stock-length comparisons, and order CSV and PDF files. Viewing saved source records and cutting results, resharing saved order files, backup and restore are also included. See Google Play for availability and the purchase price. No ads. No account is required. Support: info@cairo-plus.com