Roof Pitch Calculator

Roof Pitch Calculator — Convert Roof Slope to Degrees, Percentage, X/12 & Rafter Length Calculate roof pitch accurately and quickly. Roof Pitch Calculator is a fast, offline tool for roofers, builders, architects, engineers, and DIY homeowners. Enter rise and run (or angle) and instantly get pitch in degrees, percentage, X/12 ratio, rafter length, and roof area. Perfect for planning roofing projects, cutting rafters, and verifying slope before installation. KEY FEATURES ROOF PITCH CONVERSION Convert between rise/run, degrees, percentage, and X/12 pitch format. Supports imperial (feet/inches) and metric units. Get instant results for any roof slope. RAFTER LENGTH & ROOF AREA Calculate rafter length from pitch and run, and estimate roof area from building footprint and pitch. Essential for material ordering and framing. INTERACTIVE ROOF PROFILE VISUALIZER See your roof profile update live as you adjust pitch. Visualize the slope, angle, and rafter layout before you build. CALCULATE & CLEAR BUTTONS Enter your values, tap Calculate to see results, and use Clear to reset. Clean, simple interface designed for job site use. HISTORY & EXPORT Save calculations to History. Search and filter your list. Share text summaries, export PDF reports in your selected app language, and delete entries with individual confirmation. SETTINGS Switch units, currency (USD, CAD, EUR, CHF, FCFA, GBP, and more), language (EN, FR, ES, AR, ZH), and theme mode (System / Light / Dark — Dark is default). About Us, privacy policy, terms, and contact links included. BUILT FOR THE JOB SITE • Works offline — no internet required for calculations • No sign-up required — start calculating immediately • Responsive layout for phones and tablets • Dark mode by default with high-contrast text for low-light conditions • Clean, readable UI with clear borders for outdoor use WHO IS IT FOR? Roofers, carpenters, builders, architects, engineers, estimators, real estate professionals, and DIY homeowners planning roof installation, repair, or framing. WHY CHOOSE THIS APP? Accurate roof pitch conversion, fast rafter length and area calculations, interactive visualizer, multilingual PDF reports, and a clean interface that handles long numbers and multiple units. ABOUT KOCHI DIGITAL Kochi Digital builds minimalist, high-performance construction and real estate calculators. Explore more at kochidigital.com. Official website: https://kochidigital.com/apps/roofpitchcalculator/ Construction calculators: https://volumesolver.com/construction-calculators/ Download Roof Pitch Calculator now and get accurate slope conversions, rafter lengths, and roof area — anywhere, anytime.