Construction Framing And Carpentry

Professional rafter calculator to compute common rafter length, rise, roof angle, and overhang. Supports span or run, pitch (rise-in-12) or angle, and both metric and imperial units. WCAG-accessible and mobile-first.

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Construction Framing And Carpentry

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Latest update: 2026-01-26

Calculators

Rafter Length Calculator | Framing & Roofing Tool
Professional rafter calculator to compute common rafter length, rise, roof angle, and overhang. Supports span or run, pitch (rise-in-12) or angle, and both metric and imperial units. WCAG-accessible and mobile-first.
Formulas

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Version 0.1.0-draft
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Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).