Rafter Roof Calculator
Birdsmouth Pitch Angles
$1.99 · Designed for iPad. Not verified for macOS.
Rafter Roof Calculator is a job-site tool for carpenters, framers, contractors, and serious DIYers who need accurate rafter and birdsmouth layout in imperial feet-inches-fractions.
• Full rafter geometry: total length, top length, rise, run, fall, setback, and tail/overhang along the rafter
• Birdsmouth layout: plumb depth or seat width modes, plus a safety warning when the notch is too deep
• Height Above Plate (HAP): instantly see remaining rafter depth over the wall plate
• Pitch & angle input: quick common pitch selector plus degree entry for custom roofs
• Secondary helper: calculate rafter run from building width and ridge thickness, then “Use This Value” in the main screen
• Interactive diagrams: scroll/pan views with grid and scale for the full rafter profile and a close-up birdsmouth detail
• PDF export: save/share a clean report with inputs, results, timestamp, and warnings
Built for speed and reliability: real-time updates (no Calculate button), offline operation, and privacy-friendly (no tracking).
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Vladislav Zhirnov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Vladislav Zhirnov
- Size
- 3.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 31 more
- English, Arabic, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © zhirnov.zsystems
