T&TTool & TallyBusiness calculators for service owners

Free estimating calculator

Roofing Square Estimator

Estimate roofing squares, shingle/material cost, labor, tear-off, disposal, and suggested price.

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Tool & Tally calculators are for general business planning and estimating; they are not tax, legal, payroll, financial, or accounting advice. No guaranteed revenue, profit, leads, bookings, sales, rankings, or ROI. Use local codes, site conditions, supplier pricing, and professional judgment before quoting work.

Estimate planning check

Enter your assumptions.

Formula and assumptions

How the calculator works

Roofing Squares = Ceiling(Roof Area × (1 + Waste %) / 100) Material Cost = Squares × Material Per Square Labor Cost = Squares × Labor Per Square Suggested Price = Total Cost / (1 - Target Margin)

Common mistakes this catches

  • Using house footprint instead of roof area.
  • Forgetting pitch, valleys, starter, ridge, flashing, and waste.
  • Leaving tear-off, dump fees, permit, and access conditions out of the estimate.

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