Roof Pitch Calculator
Free roof pitch calculator. Convert rise and run into roof pitch, angle, slope percentage, pitch multiplier, and an approximate common-rafter length.
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Roofing Calculator Hub
Convert roof pitch, rafter geometry, roof area, shingles, and slope details into early material-planning estimates.
Calculators
Start with the estimate that matches your job.
Each page solves a distinct planning task so you can move from dimensions to a more useful purchase or layout check.
Roofing Material Calculator
Free roofing material calculator. Estimate simple roof surface area, roofing squares, underlayment coverage, waste, and a starting shingle material budget.
Open Roofing Material CalculatorRafter Length Calculator
Free rafter length calculator. Estimate a common-rafter diagonal length from roof rise, run, and overhang for early roof planning.
Open Rafter Length CalculatorRoof Shingle Calculator
Free roof shingle calculator. Estimate roof area, roofing squares, shingle bundles, and waste allowance from building size and roof pitch.
Open Roof Shingle CalculatorMethod
Measure, estimate, verify.
Use calculators to prepare a first material plan, then verify actual material, plans, manufacturer requirements, and local rules before committing to a build.