RoofingCalc Pro

The only roofing calculator you need. Roof area, pitch, rafter length, materials, and job cost — all offline with PDF export. Completely free. No ads, no subscriptions.

RoofingCalc Pro is the professional roofing calculator built for roofers, contractors, and estimators who need fast, accurate answers on the job site — no internet required.

Four powerful calculators in one app. Punch in your measurements, get precise results, and export a clean PDF estimate you can hand to your client or attach to a claim file. Works completely offline — even on top of the roof.

FOUR CALCULATORS:

1. ROOF AREA & MATERIALS Enter your roof footprint dimensions and pitch. Get the exact roof area in square feet AND in roofing squares (1 square = 100 sq ft). Instantly see how many bundles of shingles, rolls of underlayment, and ridge cap pieces you need. No more guessing at the supply house.

2. PITCH CALCULATOR Enter rise and run — get pitch as a ratio (e.g. 6/12), in degrees, and as a percentage. Or enter any one value and calculate the others. The slope factor and hip/valley factor are shown so you can use them in your own calculations. Covers every pitch format roofers use.

3. RAFTER LENGTH Enter the run and pitch — get common rafter length, hip rafter length, and valley rafter length. Accounts for the correct geometric factors (slope factor for common rafters, hip/valley factor for hip and valley rafters). Cut your lumber right the first time.

4. JOB COST ESTIMATOR Enter roof area, material costs per square, labor rate, and waste factor. Get a complete job breakdown: materials cost, labor cost, waste allowance, and total job price. Perfect for quick on-site estimates and formal bids.

KEY FEATURES:

PDF Export — Generate a professional one-page PDF report with all calculations and send it to your client, adjuster, or office right from the job site.

Calculation History — Every calculation is automatically saved. Go back to yesterday's estimate without re-entering numbers. Search by date or project.

Imperial & Metric — Toggle between feet/inches and meters with one tap. Materials quantities adjust automatically.

Works Offline — No internet connection needed. All calculations run locally on your device. Works on the rooftop, in rural areas, anywhere.

Dark Theme — Green-on-dark interface designed for readability in bright sunlight on rooftops. Easy on the eyes during long days.

Modern Interface — Clean SwiftUI design. Big tap targets for gloved hands. No clutter, no ads, no popups.

WHO IS ROOFINGCALC PRO FOR?

Professional Roofers — Calculate area, materials, and rafter lengths on every job. Export PDF estimates from your truck. General Contractors — Quick roofing math when you need it, even if roofing isn't your primary trade. Insurance Adjusters — Calculate roof area and replacement costs for storm damage claims. PDF for the file. Roofing Apprentices — Learn the formulas while getting accurate answers. Build confidence on the job. DIY Homeowners — Estimate your own roofing project before calling contractors. Know what materials you need.

COMPLETELY FREE. NO ADS. NO SUBSCRIPTIONS.

RoofingCalc Pro is free. Every feature is included — no hidden costs, no per-report charges, no "premium tier." We believe a calculator should just work.

Privacy: RoofingCalc Pro collects zero data. No account required. No analytics. No ads. Your calculations stay on your device.

Privacy Policy: https://love8ko.github.io/roofingcalcpro/privacy-policy.html Support: https://love8ko.github.io/roofingcalcpro/support.html