Roofing Squares Calculator
Calculate roofing squares from roof area.
Calculation example
Inputs: Roof Area (sq ft): 2400 sq ft
Result: 24 roofing squares
A 2,400 square foot roof surface equals 24 roofing squares.
Formula
Roofing squares = roof area in square feet รท 100.
How to use this calculator
Divide roof surface area in square feet by 100.
Before you calculate
Measure the project dimensions as accurately as practical and keep all measurements in compatible units. For material products, use the coverage, yield, density, or package size stated by the manufacturer or supplier rather than a generic assumption.
Choose the waste allowance based on the project shape, installation method, cutting requirements, and material characteristics. A simple rectangular estimate may need adjustment for openings, corners, slopes, joints, patterns, compaction, or other site conditions.
Understanding the result
The calculator provides a planning estimate based on the inputs shown above. It is not a substitute for project drawings, structural design, manufacturer instructions, or local requirements. Before ordering, compare the calculated quantity with the supplier's package sizes and ordering units.
Tips
- Use measured roof surface area when available. A roofing square is 100 square feet.
Frequently asked questions
What is a roofing square?
One roofing square represents 100 square feet of roof surface.
Does it measure roof slope?
No. Enter actual roof surface area.
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Use compatible units and verify estimates against project specifications, local requirements and manufacturer instructions.