Description
Plan, calculate, and estimate your gable roof project with precision — right from your iPhone or iPad.
Gable Roof Framing Calculator is a professional-grade tool built for carpenters, builders, roofers, and DIY homeowners. Enter your building dimensions and get instant, accurate results for every aspect of your gable roof framing.
FULL ROOF CALCULATIONS
• Building and roof dimensions with eave and gable overhangs
• Overall rise, ridge top, and ridge bottom heights
• Rafter spacing with equal or exact distribution modes
• Plumb cut angles and setback measurements
• Roof area, gable area, and volume calculations
• Running measurements for ridge and wall layout
INTERACTIVE DIAGRAMS
• Roof Plan — top-down view with rafter layout
• Roof Profile — cross-section showing heights and angles
• Rafter Detail — individual rafter with birdsmouth and plumb cuts
• Pinch-to-zoom for fine detail inspection
MATERIALS & COST ESTIMATOR
• Ridge and rafter quantity with exact dimensions
• Shingle bundles, starter course, squares, and ridge cap
• Enter your unit prices for lumber, roofing, and battens
• Adjustable waste percentage
• Instant cost breakdown with line-item detail and grand total
BONUS TOOLS
• Pitch / Angle Converter — convert between pitch, degrees, and slope %
• Board Feet Calculator — quick lumber volume calculation
• Plywood / Sheathing Estimator — sheets needed for your roof area
• Hip / Valley Rafter Calculator — length, angle, and backing angle
BUILT FOR THE JOBSITE
• Supports Metric (mm) and Imperial (feet–inches–fractions)
• Device angle measurement — place your phone on any slope to capture the roof pitch instantly
• Standard lumber size presets (2×4 through 2×12 and common metric sizes)
• Export a complete multi-page PDF report with results, diagrams, and cost estimates
• Share results via text, email, or any app
METRIC & IMPERIAL
Switch between millimeter-based metric input and a purpose-built feet/inches/fractions picker designed for fast, error-free entry on the jobsite. Every calculation adapts to your chosen unit system automatically.
Whether you are a professional framer pricing a job, a contractor preparing a bid, or a homeowner planning a garage build — Gable Roof Framing Calculator gives you the numbers you need. Fast, accurate, and fully offline.
Download now and take the guesswork out of your next roof.