How Many Squares is My Roof?
Roofing contractors and suppliers measure roofs in “squares” – where 1 square = 100 square feet. Here’s how to figure out your roof’s square count, or get it instantly with satellite data.
Quick Answer
One roofing square = 100 square feet. To find your squares: divide your roof’s total square footage by 100. A 2,500 sq ft roof = 25 squares. The average home has 20-25 squares. Use our free roof report to get your exact measurement.
What is a Roofing Square?
A roofing “square” is a unit of measurement used in the roofing industry. It equals 100 square feet of roof surface area.
Why use squares? It simplifies ordering materials and pricing jobs. Instead of saying “I need 2,500 square feet of shingles,” contractors say “I need 25 squares.”
Why it matters for homeowners
Contractors quote jobs by the square. Knowing your square count helps you understand quotes, compare prices, and spot overestimates.
How Many Squares is the Average Roof?
Here’s what typical homes look like in squares:
| Home Size | Typical Roof Area | Squares |
|---|---|---|
| Small home (1,000-1,500 sq ft) | 1,500-2,000 sq ft | 15-20 squares |
| Average home (1,500-2,500 sq ft) | 2,000-3,000 sq ft | 20-30 squares |
| Large home (2,500-4,000 sq ft) | 3,000-4,500 sq ft | 30-45 squares |
| Estate (4,000+ sq ft) | 4,500+ sq ft | 45+ squares |
Note: Roof area is often larger than home square footage because it includes slope factor and overhangs. A 2,000 sq ft ranch home might have a 2,500 sq ft roof.
What Does a Square of Shingles Cost?
Material costs per square (100 sq ft), not including labor:
| Material | Cost per Square | 25-Square Roof |
|---|---|---|
| 3-Tab Asphalt | $90-$120 | $2,250-$3,000 |
| Architectural Shingles | $120-$200 | $3,000-$5,000 |
| Metal Roofing | $300-$600 | $7,500-$15,000 |
| Slate | $800-$1,500 | $20,000-$37,500 |
Bundles vs. Squares
Shingles are sold in bundles. Most architectural shingles require 3 bundles per square. So 25 squares = about 75 bundles of shingles.
Find Out Your Exact Square Count
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Get Free Roof ReportFrequently Asked Questions
How do I convert square feet to roofing squares?
Divide your total roof square footage by 100. For example: 2,800 sq ft ÷ 100 = 28 squares.
How many bundles in a square?
Most architectural shingles come 3 bundles per square. Some heavier shingles are 4 bundles per square. Check the package – it will list coverage per bundle.
Why is my roof bigger than my house?
Roof area is larger than floor plan because: (1) roof pitch adds surface area – steeper roofs have more sq ft, (2) overhangs extend past exterior walls, (3) garages, porches, and additions are covered. A 2,000 sq ft home often has a 2,400-2,800 sq ft roof.
How much does it cost to replace per square?
Including labor, asphalt shingle replacement typically costs $350-$600 per square installed. Metal roofing runs $700-$1,200 per square installed. Use our cost calculator for a full estimate.