HomeExpertly
www.homeexpertly.comRoof Area Calculator
Turn your building footprint and roof pitch into real sloped roof area — then roofing squares, shingle bundles, and material cost — with U.S. units, a pitch comparison, and a downloadable PDF estimate.
A ground-based estimate — steep, hipped, or cut-up roofs vary. Never climb a roof without proper safety gear. Prices use 2024-2025 U.S. figures. For planning purposes only.
Footprint & Roof
1
Roof Footprint
ft
×
ft
in
Added to all sides of the footprint (typical eave is 12-24 in)sq ft
2
Pitch & Complexity
/ 12
×
10%
Auto-set by complexity; covers cuts at hips, valleys, and starter/ridge
3
Material & Cost
$/ square
1 roofing square = 100 sq ft of roof (material only)$/ square
Pro tear-off + install ~$150-400 per square. Set 0 for materials only.
Roof Estimate
Total Roof Area
—
Enter your roof to begin
Roofing Squares
—
Footprint Area
—
Pitch Factor
—
Area & Cost Breakdown
Base roof area —
Roof area with waste —
Roofing material —
TOTAL ESTIMATE—
Shingle Bundles
—
Cost / Square
—
Install labor
—
Cost Breakdown Chart
Estimated cost by category ($)
Pitch Comparison — Your Footprint
| Pitch | Factor | Roof Area | Squares |
|---|
For your 1,344 sq ft footprint with 10% waste. Steeper pitch = more roof area.