Hip Roof Calculator
Calculate hip roof dimensions and material requirements with precision. Our calculator determines rafter lengths, roof area, and total linear feet needed for your hip roof framing project.
Hip Roof Construction Guide
Understanding Hip Roofs
Hip roofs have slopes on all four sides, making them more complex but also more durable:
- Wind resistance: Four-sided slope provides excellent wind resistance
- Structural stability: Self-bracing design is very strong
- Weather protection: No vertical gable walls to catch wind
- Aesthetic appeal: Symmetrical appearance works with many home styles
- Complexity: Requires skilled framing due to angled cuts
Hip Roof Components
Several types of rafters are needed for hip roof construction:
- Common rafters: Run from ridge to wall plate on front and back
- Hip rafters: Run diagonally from corners to ridge ends
- Jack rafters: Shorter rafters that connect wall plate to hip rafters
- Ridge board: Runs along the peak, shorter than building length
- Wall plates: Top plates of walls that support rafters
Framing Considerations
Hip roofs require precise calculations and cuts:
- Hip rafter length: 42% longer than common rafters due to diagonal span
- Compound angles: Hip and jack rafters require compound miter cuts
- Rafter spacing: Typically 16" or 24" on center
- Bird's mouth cuts: Notched cuts where rafters sit on wall plates
- Plumb cuts: Angled cuts at ridge and overhang ends
Planning Your Hip Roof
Key factors to consider during the planning phase:
- Building proportions: Hip roofs work best on rectangular buildings
- Pitch selection: 4/12 to 12/12 pitches are most common
- Material selection: Use properly sized lumber for span requirements
- Code compliance: Meet local building codes for rafter sizing
- Professional help: Consider hiring experienced framers for complex cuts
Cite this page as:
Daniel, P. Hip Roof Calculator. Available at: https://constructioncalculators.com/hip-roof-calculator/. Accessed: October 25, 2026.