Roof Pitch Gauge - Gabled
Slope Angle Measure Calculator
Free · In‑App Purchases · Designed for iPad
Measure roof pitch instantly using your phone's built-in sensors or camera, then calculate the materials and rafter dimensions you need for any roofing project.
◆ TWO WAYS TO MEASURE
• Tilt Sensor : Place your phone on the roof surface for a direct reading. A precision sensor filter (gyroscope + accelerometer fusion) delivers stable, accurate results.
• Camera Sight : Stand on the ground and aim at the roofline. On-screen guides help you align while sensors compute the angle automatically.
◆ BUILT-IN BUBBLE LEVEL
An animated circular spirit level with a color-coded stability indicator (amber → green → blue) helps you confirm your reading is locked and accurate.
◆ MATERIALS CALCULATOR
Enter your pitch and roof dimensions to get a complete materials list:
• Squares, bundles, and underlayment rolls
• Starter strip, ridge cap, and drip edge
• Nails and optional ice & water shield
• 9 roofing materials : 3-Tab Shingles, Architectural Shingles, Standing Seam Metal, Corrugated Metal, Wood Shakes, Clay Tile, Concrete Tile, Slate, and Roll Roofing
• Minimum pitch validation for each material type
◆ RAFTER CALCULATOR (Pro)
Compute everything you need for framing:
• Common rafter length, run, and rise
• Overhang tail length
• Plumb and seat cut angles
• Framing square reference marks
• Ridge height
• Hip/valley rafters with compound angles
◆ REFERENCE TABLES
• Pitch Table : 47 entries from 0.5:12 to 24:12 with degrees, slope %, multiplier, and hip/valley factor. Tap any row to use it in the calculator.
• Span Tables (Pro) : IRC R802.4 rafter spans for 2×4 through 2×12, SPF #2 and Douglas Fir #2, at 16" and 24" OC.
• Unit Converter : Feet & inches ↔ decimal feet/meters, degrees ↔ pitch, slope % ↔ pitch, sq ft ↔ roofing squares.
◆ MEASUREMENT HISTORY
Save up to 50 measurements with timestamps, mode (tilt or camera), and custom labels. Copy or share your history as formatted text (Pro).
◆ FREE VS PRO
Free includes asphalt shingle calculations, 1 roof section, and 10 saved measurements. Upgrade to Pro for all 9 material types, unlimited roof sections, cost estimates, rafter calculator, span tables, history export, and customizable defaults.
◆ SUBSCRIPTION OPTIONS
• Monthly, Annual (with savings), or Lifetime
• Free trial available where offered
Terms of Use: https://ukgadgetsltd.com/gabled/terms.html
Privacy Policy: https://ukgadgetsltd.com/gabled/privacy.html
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The developer, UKGADGETS LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
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The following data may be collected and linked to your identity:
- Purchases
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The following data may be collected but it is not linked to your identity:
- Identifiers
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Information
- Seller
- UKGADGETS LTD
- Size
- 36 MB
- Category
- Utilities
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Gabled Pro Annual $19.99
- Gabled Pro Lifetime $39.99
- Gabled Pro Monthly $2.99
- Copyright
- © 2026 UKGADGETS LTD