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.

Custom Sizing Variants: Pitch To Angle Angle To Pitch Rafter Length Roof Area 4 12 6 12

🪜 Stair Stringer Calculator

Calculate stair riser height, tread runs, stringer board lengths, and incline angles. IRC compliance checks.

Custom Sizing Variants: Rise Run Stringer Length Code

🪵 Lumber Board Feet Calculator

Calculate board feet and cubic meters of lumber. Estimates raw and dimensional lumber volumes.

Custom Sizing Variants: 2X4 2X6 To Linear Feet Cost

🪵 Decking & Framing

Calculate deck board counts, layout rows, subgrade framing joists, and structural screw fasteners.

📐 Joist Span Allowable

Calculate allowable horizontal joist span boundaries based on wood species bending limits and deflection caps.

🪵 Fence Post Spacing Calculator

Calculate fence post spacing, post quantities, and rails needed. Estimates line and terminal posts.

Custom Sizing Variants: Spacing Number Of Posts With Gates

Reference Charts & Guides

Roofing and Rafter Framing Calculation Manual — Standard rise, run, and rafter framing equations.

Trade Glossary Terms

Stair Stringer Nominal Mass