Stair and Angle Calculator

Stair and Angle Calculator gives tradespeople and DIYers six precise calculators in one clean, fast app. No clutter, no subscriptions — just the numbers you need on site. STAIRS Enter total height, total run, and maximum step height. The app works out the number of steps, exact riser height, and going, accounting for optional top and bottom landings. ROOF Calculate rafter length, ridge height, and roof area. Work by pitch angle or by rise — enter your total span and the app does