Hip Roof Framing Calculator
UtilitiesReference

Hip Roof Framing Calculator

Vladislav Zhirnov · released 24 Feb 2026 · Open in App Store ↗

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Downloads 30d not estimated
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Description

The most complete hip roof framing calculator for iPhone and iPad. Designed for professional carpenters, roofers, contractors, and serious DIY builders who need precise measurements on the job site.

Enter your building dimensions, roof angle, and lumber sizes — get every measurement you need to frame a hip roof, instantly.

COMPLETE CALCULATIONS

Common, hip, and jack rafter lengths with overhang

All plumb cuts, side cuts, and backing angles

Birdsmouth seat and plumb dimensions

Ridge length and king common calculations

Jack rafter shortening and spacing

Sheathing sheets, shingle bundles, and fascia quantities

Roof area, volume, and material estimates

Frieze block and purlin lip angles

Batten spacing and linear footage

14 INTERACTIVE DIAGRAMS

Roof plan view with color-coded rafters

Common and hip rafter side profiles with full dimensions

Cross-section profile showing wall, ridge, and rise

Angle template protractor for all cut angles

Joint connection detail

3D jack and hip plumb/side cut perspectives

Hip backing angle cross-section

Individual jack rafter diagrams with measurements

Running layout plan with ridge, wall, and hip marks

Sheathing cut angle diagram

Flat roof segment layout with areas

BUILT FOR THE JOB SITE

Device inclinometer — place your phone on a rafter or roof surface to measure the angle directly, then feed it into the calculator with one tap

Pinch-to-zoom on every diagram for inspecting fine details

Imperial and metric input modes — switch instantly

Output in feet, inches, or millimeters

Fraction precision from 1/8 to 1/64 inch

SAVE & SHARE

Save unlimited named presets for different projects

Export a comprehensive PDF report with all inputs, dimensions, materials, angles, and rafter schedules

Share reports with your crew or clients

ACCURACY YOU CAN TRUST

Calculation engine verified against industry-standard reference values

Every angle, length, and quantity computed from first principles using precise trigonometry

Internal precision to 1/32 of an inch

Supports equal and exact rafter spacing modes, drop and chamfer hip adjustment methods, eave overhang calculations, porch extension sub-calculator, and roof segment area breakdowns.

Whether you are framing a new construction, estimating materials for a bid, or planning a renovation — this is the only roof framing tool you need on your phone.