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Roofing Calculator
Area with waste divided by 100 square feet.
Choose a roofing workflowEstimate pitched roof area or roofing squares, waste, and optional cost.
2 optionsROOFING MATERIAL24.2 squares
area × (1 + waste) ÷ 100; estimated cost $0.00. Only inputs needed by this operation are shown. Pitch 30.00°; estimated cost $3025.00.
Estimate based on the values shownFormula checkedRoof area uses the pitch secant plus a documented eaves allowance; materials use 100 ft² per roofing square. Accepts angle, rise-over-12, or direct pitch multiplier plus full area/length and per-area pricing units.