Roofing Calculator
Calculate roof area, material quantities, and roofing estimates. Free roofing calculator for contractors and tradespeople.
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Create roofing estimates and convert to invoices in Tregovia
14-day free trial · No credit card required · All modules included
Frequently asked questions
How do I calculate roof area?
Measure the footprint (length × width). Multiply by the pitch multiplier for your roof pitch. Add 10–15% for waste and overlaps.
What is a roofing square?
One roofing square = 100 sq ft. Divide total square footage by 100 to get squares needed for materials ordering.
How do I estimate roofing material costs?
Multiply squares needed by cost per square for your material type (shingles, tiles, metal). Add labour, underlayment, and accessories. Create the estimate in Tregovia.
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