The Carpenter App vs Stair Calculator

The Carpenter App is the ultimate digital toolbox for professional carpenters, builders, woodworkers, and apprentices. Built with precision formulas and real-time CAD blueprints. KEY FEATURES: • Pythagoras & Rafters: Instant angle calculations, bevel cuts, pitch, and diagonal rafters with millimetre precision. • Stair Calculator: Automatic step heights, tread depths, and stringer layouts compliant with building standards. • Cladding & Siding: Fast surface area, batten spacing, board counts, and waste margin optimization. • Length Optimization (Cutting Lists): Minimize timber waste and calculate exact board cuts from raw lumber. • Bevel & Mitre Saw: Compound mitre and bevel angles for crown mouldings and timber framing. • Project Notes: Clean, distraction-free messaging and notes for your crew on the jobsite. DESIGNED FOR THE JOBSITE: • Dark mode optimized for battery saving on site. • Full offline support – works anywhere without cellular signal. • Live SVG blueprints with exact dimensions. • Metric (mm/cm/m) and imperial unit support.

Every set of DIY stairs starts with the same puzzle: one total height, and the question of how many steps should divide it. StairStepScan answers it on the spot. Measure the rise with a tape, type it in, and the app splits it into even risers, pairs them with a comfortable tread, and draws the whole staircase as a dimensioned side profile you can build from. PLAN - Riser and tread worked out from one measured height - Compare step counts side by side, with the classic 2R+T comfort rule showing which option walks best - Slope angle and stringer length, drawn right on the diagram BUILD - A cut list in plain carpentry terms: stringer notches, tread boards, riser boards - Millimeters or feet-and-inches with proper fractions - Save every staircase — the deck steps, the shed, the basement HONEST TOOL - Comfort ranges are editable defaults, not building law. Stair codes differ by region, and the app tells you to check yours before you cut. No account, no subscription. One purchase, on your device, forever.