Roofing Calculator - Calculate Roofing Materials
Calculate roofing shingles and materials. Free calculator with cost estimates.
Roofing Calculator: Calculate shingles needed for your roof.
Roofing Materials
Squares
25
Bundles
75
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Roofing Materials
Measure roof area, multiply by pitch factor, divide by 100 for squares. Add 10-15% waste. 3 bundles per square.
Frequently Asked Questions
New roof cost?
Asphalt: $350-550 per square installed. Metal: $700-1200. 20 square roof = $7,000-24,000.
Shingles needed?
Calculate squares, add 10-15% waste, multiply by 3 bundles. 22 squares × 3 = 66 bundles.
What is roofing square?
One square = 100 sq ft roof area. Shingles sold by square (3 bundles).
Measure roof?
Measure sections, multiply by pitch factor, add together, divide by 100. Add 10-15% waste.
Roof lifespan?
Asphalt: 15-30 years. Architectural: 25-50. Metal: 40-70. Tile: 50-100 years.
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