ROOF MEASUREMENT UTILITY
Roofing Square Calculator
Convert total roof surface area in square feet or square meters into standard industry roofing squares (1 square = 100 sq ft) for accurate contractor quotes and material estimates.
Roofing Square Calculator
Convert square feet or square meters to standard industry roofing squares (1 square = 100 sq ft).
Enter total sloped roof surface area in square feet.
What Is a Roofing Square?
In the roofing industry, a roofing square is a standard unit of measurement equal to exactly 100 square feet of roof surface area. Contractors and material suppliers quote labor, underlayment, and shingles in squares rather than individual square feet to simplify large calculations.
Conversion Formulas
Roofing Squares = Square Feet ÷ 100
Square Feet = Roofing Squares × 100
Square Meters = Square Feet × 0.092903
Worked Example
Example: 2,400 sq ft roof
- Total Square Footage: 2,400 sq ft
- Divide by 100: 2,400 ÷ 100 = 24 Roofing Squares
- Metric Equivalent: 2,400 × 0.092903 = 222.97 m²
Square Footage to Squares Reference Table
| Square Feet | Roofing Squares | Metric (m²) | Est. Shingle Bundles (3/Sq) |
|---|---|---|---|
| 1,000 sq ft | 10.0 Squares | 92.9 m² | 30 Bundles |
| 1,500 sq ft | 15.0 Squares | 139.4 m² | 45 Bundles |
| 2,000 sq ft | 20.0 Squares | 185.8 m² | 60 Bundles |
| 2,500 sq ft | 25.0 Squares | 232.3 m² | 75 Bundles |
| 3,000 sq ft | 30.0 Squares | 278.7 m² | 90 Bundles |
Related Roofing Calculators
Frequently Asked Questions
How many square feet are in a roofing square?
There are exactly 100 square feet in one roofing square. For example, a 10 ft by 10 ft section equals 1 square.
How many shingle bundles make a square?
For standard 3-tab and architectural asphalt shingles, there are typically 3 bundles per roofing square (each bundle covers ~33.3 sq ft).
Calculation Methodology
Conversions use exact mathematical constants based on standard US building conventions. See our Calculation Methodology.