The toolbox
Free roofing tools
Everything runs client-side in your browser: no account, no email, no callback from a sales team. The numbering is the working order. Measure first (01), turn it into materials (02), price it (03). After that come the diagnostics (pitch, ventilation, financing, the claim question) and the system tools: gutters, snow load, tear-off, and metal.
Roof Area Calculator
Turn your home footprint and roof pitch into square footage and roofing squares.
Open tool 02Roofing Materials Calculator
Bundles, underlayment, nails, starter, and ridge cap: the full shopping list.
Open tool 03Roof Replacement Cost Estimator
A realistic price range for your state, roof size, material, and difficulty.
Open tool 04Roof Pitch Calculator
Convert rise and run to pitch and degrees, in both directions.
Open tool 05Attic Ventilation Calculator
Required intake and exhaust NFA, converted into real vent counts.
Open tool 06Roof Financing Calculator
Monthly payment, total interest, and a side-by-side term comparison.
Open tool 07Insurance Claim Readiness Quiz
Is your storm damage worth a claim? Find out before you call your carrier.
Open tool 08Gutter and Downspout Calculator
Size gutters and count downspouts from your roof area and local rainfall.
Open tool 09Roof Snow Load Calculator
How much does the snow on your roof weigh, and when should you worry?
Open tool 10Tear-Off Debris and Dumpster Calculator
Tear-off weight in tons and the dumpster size that actually fits the job.
Open tool 11Metal Roofing Panel Calculator
Panel counts, lengths, and fasteners for exposed-fastener or standing seam.
Open toolA note on accuracy
Every tool states its assumptions right next to the result, and each result is an informational estimate, not a quote. When money is about to change hands, verify with a licensed local contractor. Read the disclaimer.