Estimate roof squares before you price the job.
Enter footprint, pitch factor, waste, bundles per square, and material price. The calculator gives you a planning number for roof area, squares, bundles, and material cost.
Squares are only the quantity starting point.
A roofing estimate still needs tear-off, disposal, underlayment, starter, ridge, vents, flashing, access, warranty language, exclusions, labor, overhead, and final review.
FAQ
How does this roofing square calculator work?
Enter the roof footprint, pitch factor, waste allowance, bundles per square, and price per square. The calculator estimates roof area, base squares, order squares, bundles, and material cost.
What is a roofing square?
A roofing square is 100 square feet of roof area. Contractors often use squares when planning shingles, underlayment, and roofing material quantities.
What pitch factor should I use?
Use a measured pitch factor when you have one. As rough planning references, 4/12 is about 1.054, 6/12 is about 1.118, 8/12 is about 1.202, and 10/12 is about 1.302.
Does this replace a roof measurement report?
No. This is a planning calculator. Confirm roof geometry, pitch, valleys, dormers, waste, starter, ridge, underlayment, flashing, code requirements, and supplier quantities before sending a final estimate.
Can I turn this into a roofing estimate?
Yes. Use this calculator for the quantity starting point, then add labor, tear-off, disposal, accessories, warranty language, exclusions, and final review before sending a customer-facing estimate.