Roof Pitch Calculator: Roofing

MEASURE THE ROOF, SIZE THE JOB, KEEP THE RECORD. Roofing Calculator Pro is a focused roofing calculator — read the pitch, take off the material, and keep every number with the job. No paper pad, no second app, no account. MEASURE THE PITCH • Pitch gauge — lay the phone on the deck or hold it to a rafter for the angle in degrees and inches-per-foot, with a haptic lock when the reading settles. • Pitch from a photo — shoot the gable end square-on from the ground, drag a line onto the slope, and read the pitch without climbing. TAKE OFF THE ROOF • Tape measure — log every run (eave, rake, ridge, hip, valley) on the fast fraction keypad; it totals the linear feet and can seed the material list. • Material calculator — plan area, pitch, and waste in; squares, shingle bundles, underlayment, ice-and-water, starter, ridge and hip cap, drip edge, and nails out. Coverage and waste presets are editable, and any count can be overridden. CHECK THE DETAILS • Ventilation — attic area with a 1:150 or 1:300 ratio gives required net free area, balanced intake and exhaust, ridge-vent feet, and soffit count. • Rafter — run, pitch, and overhang give common and hip/valley rafter lengths, with the pitch, angle, and slope factor shown together. • Plumb bob — a true vertical for a chimney, parapet, or wall. KEEP THE JOB • Every reading saves to an on-device job ledger — search it, pin it, reopen it. • Export a clean, branded PDF or PNG, or a .plumb backup, when you choose to. • English and Spanish, in the app and in the exports. Free to try for 14 days, then a one-time unlock — no subscription, no ads, no account. Your jobs stay on the device and leave only when you share or export them. MORE FROM PLUMB Need stairs, concrete, or framing math too? Construction Calc Pro and the rest of the Plumb apps are a tap away in Settings. A note on accuracy: phone-sensor and photo measurements are a fast field reference, not an engineering or code determination. Confirm structural, ventilation, nailing, and safety-critical numbers with calibrated tools and current local code.