Calculator collection
Roof, Stair & Framing Calculators
Work out roof, stair and framing geometry for project planning and layout.
Birdsmouth CalculatorEstimate birdsmouth seat and heel geometry from roof pitch, seat length and rafter depth.Rafter CalculatorCalculate common-rafter length from building span or horizontal run, roof pitch and optional horizontal overhang.Roof Area CalculatorCalculate sloped roof surface area from horizontal plan dimensions and roof pitch.Roof Pitch CalculatorConvert roof rise and run into pitch per 12 inches, roof angle and slope percentage.Roofing CalculatorEstimate sloped roof area and roofing squares from plan dimensions, pitch and waste allowance.Shingle CalculatorEstimate roofing squares and shingle bundles from roof plan dimensions, pitch, waste and bundles per square.Squaring & Diagonal CalculatorCalculate a rectangular diagonal or scale a 3-4-5 triangle for squaring layouts.Stair CalculatorCalculate stair riser count, actual riser height, tread layout and overall run from a measured total rise.Stair Stringer CalculatorCalculate stair stringer layout from total rise, target riser height and tread run, including riser count, stair angle and slope length.
No calculators match that search.