Roofing Calculator
Estimate roof area, shingle squares, and bundles based on pitch and footprint.
Recommended: 10-15% for gables, 15-20% for hips/valleys.
0
sqRoof Squares (100ft²)
0 Bundles
Standard Shingles
0
Total Sq. Ft Area
Multipliers
Because of the 6/12 slope, you need -100.0% more material than a flat roof.
Metric
How It Works
We extrapolate the roof area from the flat footprint using a pitch multiplier.
Flat Area = (L + Overhangs) × (W + Overhangs)
Multiplier = √(12² + Pitch²) ÷ 12
Roof Area = Flat Area × Multiplier
Key Terms
- Square: 100 square feet of roof area.
- Bundle: Typically 3 bundles cover 1 square.
- Pitch: The rise in inches for every 12 inches of run.
About the Roofing Calculator
This roofing calculator estimates material quantities and project costs for home improvement work. Estimate roof area and shingle bundles required.
Use before purchasing materials to reduce waste and budget more accurately for DIY or contractor projects.
Adjust the inputs above to model your specific scenario with the Roofing Calculator.
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