Roof Pitch Calculator & Gauge

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About this app

Roof Pitch Calculator is a free pitch finder and slope gauge for roofers, carpenters, general contractors, and DIY homeowners. Measure roof pitch safely from the ground using your phone's camera, or place your phone flat on the roof surface to read the angle instantly — no ladder climbing, no bubble level, no pitch card needed.

Built with a high-visibility, industrial dark mode interface, it works accurately in bright sunlight or low-light conditions on the job site.

HOW IT WORKS

• Camera Alignment Mode — Measure roof pitch from the ground. Point your camera at the roof, align the on-screen guide with the roof edge, and read the pitch instantly. Safe and fast for estimates and inspections.

• Lay-Flat Sensor Mode — Place your phone directly on the roof surface, rafter, or rake board. The built-in inclinometer reads the slope using your phone's precision sensors.

PITCH IN EVERY FORMAT

Get your roof slope displayed as:
• Standard pitch ratio (4/12, 6/12, 8/12...)
• Angle in degrees
• Slope percentage (grade)

Perfect for checking material requirements: most asphalt shingle manufacturers require a minimum 4/12 pitch, while low-slope roofs need EPDM, TPO, or modified bitumen. Knowing your exact pitch before you bid or buy materials saves time and money.

WHO IS IT FOR

• Roofing contractors — quick pitch checks during estimates and inspections
• Carpenters & framers — verify rafter angles and slope on new builds
• Insurance adjusters & home inspectors — document roof slope from the ground
• Solar installers — panel placement starts with an accurate roof angle
• DIY homeowners — know your pitch before ordering shingles or talking to a roofer

WHY THIS PITCH GAUGE

✓ 100% free — no subscription, no account, no sign-up
✓ Works offline — no internet needed on the job site
✓ Fast — get a reading in seconds
✓ High-contrast dark interface designed for outdoor use
✓ Lightweight app, no bloat

Whether you call it roof pitch, roof slope, roof angle, or grade — this inclinometer app gives you an accurate reading in seconds, right from your pocket.

Download the free Roof Pitch Calculator today and measure any roof safely from the ground.