Replacing a roof or building a new home? Our Roofing Calculator provides accurate estimates for shingle bundles and roofing squares. It automatically adjusts for roof pitch (slope) and overhangs, ensuring you order enough material for the job.
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Roofing Calculator
Estimate roof area, squares, and shingle bundles
House Dimensions
Materials Needed
Enter house dimensions to calculate materials
Calculate Roof Shingles & Materials
Estimate roof area, number of squares, and shingle bundles needed. Accounts for roof pitch and overhangs.
1
House Dimensions
Enter the length and width of the house footprint.
2
Roof Pitch
Select the roof slope (e.g., 6/12) to adjust for the angle.
3
Overhang
Add the length of overhangs (eaves) in inches.
Key Features
Pitch Adjustment
Automatically calculates true roof area based on slope.
Bundle Count
Estimates standard 3-bundle-per-square requirements.
Overhangs
Include eaves and overhangs for precise area calculation.
Frequently Asked Questions
A 'square' in roofing terms equals 100 square feet of roof area.
Typically, 3 bundles of standard architectural or 3-tab shingles cover one square (100 sq ft).
Pitch is the rise in inches for every 12 inches of run. A 6/12 pitch rises 6 inches for every foot of horizontal distance.
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