Roofing Calculator — Free Online Calculator with Step-by-Step Guide
Estimate roofing materials for gable and hip roofs. Calculates squares, shingle bundles, felt rolls, and nails. Includes pitch multipliers and waste factors.
Roofing Calculator
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Enter Values
Roofing Squares Needed
15 squares
Shingle Bundles Needed
45 bundles
Footprint Area
1344 sq ft
Pitch Multiplier
1
Est. Material Cost
Enter price per square for estimate
Materials List
{"squares":15,"bundles":45,"feltRolls":4,"nailsLbs":30,"ridgeLength":"42"}
Scenario Comparison
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15
Squares Needed
45
Shingle Bundles
Pitch Multiplier
Shopping List
Home Depot Ready
Take this list to Home Depot or your local supplier. Standard architectural shingles come in 3-bundle squares. Felt paper comes in rolls covering ~400 sq ft each.
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