Roofing, Framing & Carpentry
Sizing and layouts calculators for woodworking, framing, and roof installations. Formulate safe stair risers, pitch slopes, lumber board feet, and post fencing alignments side-by-side.
Interactive Calculators
📐 Roof Pitch Calculator
Calculate roof pitch angle, slopes, and rafter runs. Estimates pitch factors and slope multipliers.
🪜 Stair Stringer Calculator
Calculate stair riser height, tread runs, stringer board lengths, and incline angles. IRC compliance checks.
🪵 Lumber Board Feet Calculator
Calculate board feet and cubic meters of lumber. Estimates raw and dimensional lumber volumes.
🪵 Fence Post Spacing Calculator
Calculate fence post spacing, post quantities, and rails needed. Estimates line and terminal posts.
Reference Charts & Guides
- Roofing and Rafter Framing Calculation Manual — Standard rise, run, and rafter framing equations.