Roof Framing Calc: 3D Metric

The metric roof framing calculator built for Australian, New Zealand, and UK builders. Enter span, pitch and rafter centres — get rafter length, cut angles, birdsmouth depth and a live 3D animation in seconds. Works completely offline on the job site. Whether you're framing a gable, a hip roof with jack rafters, a skillion shed, or a gambrel barn — Roof Framing Calc handles it all. Every result calculated to AS1684 (Australian Standard) and NZS3604 (New Zealand Standard). FREE FEATURES

• Gable roof calculator — span, pitch, rafter centres, ridge thickness, rafter depth
• All results instantly: rafter length, ridge height, plumb cut, seat cut, birdsmouth depth, ridge shortening, total rafters, rafter tail
• Live 3D animated roof frame — tap any rafter to see its measurements
• 2D cross-section engineering diagram — pinch to zoom, all dimensions labelled
• Pitch converter — degrees, X:12 ratio, % slope, mm per metre
• Save up to 3 projects PRO FEATURES — from $2.08/month
• Hip roof calculator — hip rafter, backing angle, cheek cut, complete jack rafter table
• Skillion (mono-pitch) calculator — rafter length, wall height difference. Sheds, verandahs, carports
• Gambrel (barn) roof calculator — lower/upper rafters, knee height, knee joint bevel
• PDF cut sheet — A4 professional report, diagram included. Share via email, WhatsApp, print on site
• Material estimator — timber lineal metres, roof area m², sheet count, cost estimate
• Unlimited saved projects
• No advertisements. Ever. BUILT FOR THE JOB SITE Large inputs designed for work gloves. High contrast for outdoor sunlight. 100% offline — no internet on site needed. AU/NZ standard timber sizes built in: 90, 140, 190, 240mm rafters. SUBSCRIPTIONS • Pro Monthly: $4.99/month — 7-day free trial • Pro Annual: $24.99/year — Save 58% — 7-day free trial — BEST VALUE • Pro Lifetime: $44.99 one-time Subscriptions renew automatically. Manage or cancel in App Store Settings at least 24 hours before renewal. Payment charged to your Apple ID. Privacy Policy: https://mayatechlab.com/rfc_privacy_policy.html