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Roofing Squares & Bundles
Estimate roofing squares and shingle bundles for a gable or hip roof, accounting for pitch and waste.
Results
Enter your dimensions and hit Calculate.
Actual squares depend on roof geometry. For complex hips, valleys, and dormers, measure each plane separately.
Assumptions
- Pitch multipliers from TPD: 3/12=1.03, 4/12=1.05, 5/12=1.08, 6/12=1.12, 8/12=1.20, 10/12=1.30, 12/12=1.41. Unmapped pitches default to 1.12.
- 3 bundles per square (standard 3-tab or architectural shingles).
- Waste includes hip/ridge cuts and starter course.