Riseline: Stair Calculator

Riseline is a feet-inch-fraction calculator and stair calculator for carpenters, framers, stair and deck builders and DIYers. No subscription, no account, works offline.

CALCULATOR

A construction calculator, framing calculator and tape measure calculator in one keypad. Tall FEET and INCH keys and one-tap fraction chips: 2' 7-5/8" takes five taps. Add, subtract, multiply and divide tape-measure dimensions; length times length gives square feet, times depth gives cubic yards. Each result shows feet-inch, inches, decimal feet and metric, with a tape strip that highlights the tick to mark.

Rise, Run, Diag and Pitch keys solve right triangles and roof pitch. L, W and H keys give area, perimeter, volume and wall area. Nine labeled memories: STO overwrites, M+ adds, and the paper tape records every step.

STAIR CALCULATOR

Enter total rise, rough or finished, and tread run. Get riser count and height, treads, total run, stringer length, angle and the stairwell opening you need. A live side view and a check list show pass or fail for risers, treads, nosing, width and headroom against IRC 2021 R311.7 limits or the comfort check (Blondel rule). You can also check an existing stair from measured steps.

PRO

L and U stairs with landings, winders, spiral and concrete stoops. Cut stringer layout with square settings, finish-aware cuts, throat check and board length. Housed stringer with routing template. Common, hip, valley and jack rafters with cheek cuts, backing and drop. Roof takeoff, materials, crown miter, cut list optimizer, cabinets, estimates and PDF stair sheets.

FREE AND PRO

Free: the full calculator, memories and tape, Quick Stair with every check, stair check, 1 project, 10 saved calcs, a backup file, and 3 tries of each Pro tool on your own numbers.

Pro is one lifetime purchase with the price shown up front. No yearly plan, no subscription. Family Sharing and Restore Purchases included.

PRIVACY

Works in airplane mode. No account, no ads, no analytics. Your projects stay on your device.

Results support your layout; always confirm with your local building code.

Support: nikita36trinta@gmail.com