Roofing calculators
Size your roofing order in squares and bundles and estimate replacement cost by pitch and area.
Roofing
Metal Roofing Calculator
Calculate how many metal roofing panels you need from your eave and slope lengths, plus panel order length, screw count, roof area, and material cost.
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Roof Pitch Calculator
Convert roof pitch between rise/run, degrees, and slope percent. Get the pitch multiplier and turn your roof footprint into true sloped roof area.
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Roofing Shingle Calculator
Estimate roofing squares, shingle bundles, and cost. Enter roof footprint, pitch, and waste to size your shingle order.
Open calculatorRoofing estimating FAQ
What can I estimate with the roofing calculators?
Size your roofing order in squares and bundles and estimate replacement cost by pitch and area. Each tool shows the formula and a worked example so you can see exactly how the result is produced.
Do these tools include labor and tax?
Unless a calculator explicitly asks for a price that includes labor, results cover materials and quantities only. Add labor, tax, and delivery from local quotes for a full budget.
Are the calculators free?
Yes — all calculators are free, run in your browser, and require no account.
Regional cost data
What these projects cost per unit in all 50 states and DC.
Roofing cost guides
- Metal Roof vs Shingles: Cost Compared Over 40 Years Metal roof vs asphalt shingle cost per square installed, lifespan, cost per year of service, insurance credits, and the 40-year break-even math done honestly.
- Roof Replacement Cost: 2026 Price Per Square What a new roof costs per square in 2026: asphalt, metal, and tile installed ranges, tear-off and decking add-ons, and how to compare three roofing bids.