Roofing Calculator
Pitch multiplier turns footprint into true roof surface.
Roof surface area
1,503 sq ft
- Squares (100 sqft)
- 15
- Shingle bundles (~3/square)
- 46
- Material estimate
- $7,200.00
Pitch multiplier 1.118× footprint.
How the Roofing Calculator works
The calculation follows the standard method used across the US — no shortcuts, no hidden assumptions. Here is exactly what happens behind the scenes:
Frequently Asked Questions
How does the Roofing Calculator work?
Enter your numbers above and results update instantly using standard formulas, computed entirely on your device.
Is the Roofing Calculator free to use?
Yes — completely free with no signup required, and it works on phones, tablets, and desktops.
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