Roof Pitch Calculator & Gauge

Turn roof measurements into a clear plan with Roof Pitch Calculator & Gauge.

MEASURE AND CONVERT PITCH
Use your device's long edge or surface as a pitch gauge. Hold a stable reading, calibrate against a level reference, or enter measurements manually. Switch between rise per 12, degrees and percentage grade.

CALCULATE ROOF AREA AND SHINGLES
Calculate rectangles, triangles and trapezoids in imperial or metric units. Choose footprint or already-measured roof surface area, include additions and exclusions, and apply your own waste and bundle-coverage assumptions. Estimate sloped lengths and overhangs.

PLAN AND DOCUMENT JOBS
Keep measurements and job records locally. Contractor tools combine roof sections, group materials, estimate underlayment and ridge quantities, calculate saved cost lines, attach photo notes, and generate branded PDF reports.

KEEP CONTROL OF YOUR RECORDS
Use portable backups to save and restore your records. Export reports through Android's file picker or share them with another app. Photos document your work; the app does not infer measurements from a photograph.

Check estimates against product coverage and actual site conditions. Sensor readings depend on the device, placement, motion and calibration. Only measure from a safe position; verify measurements before ordering or cutting materials.

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Production contractor features require Roof Pro, a one-time purchase. Store pricing is shown before checkout.