Carpentry & Roofing
Lumber, board feet, stairs, rafters, decking, shingles, siding, and fencing calculators for builders and DIY.
Straight Stairs Calculator: Rise, Run & Stringer Math Simplified
Spiral Staircase Calculator: Ergonomic Dimensions, Headroom & Blondel’s Rule
Baluster Spacing Calculator: Code-Compliant Railing Layout Guide
Vinyl Siding Calculator: Estimate Panels, Trim & Squares Accurately
Round Pen Calculator — Panels, Footing & Cost Estimates
Roof Truss Calculator: Span, Pitch & Load Force Analysis
Shingle Roofing Calculator: Estimate Bundles, Nails & Materials
Roof Pitch Calculator — Find Rafter Length, Slope & Cut Angles
Roofing Material Calculator: Estimate Squares, Pitch & True Surface Area
Rip-Rap Volume Calculator: Stone Weight, Bulk Density & Haulage
Rafter Length Calculator: Roof Pitch, Cuts & Framing Math
Wooden Fence Material Calculator: Estimate Posts, Boards & Concrete
Plywood Sheets Calculator: Estimate Layout, Waste & Cost Accurately
Log Weight Calculator: Estimate Timber Mass, Volume & Transport Load
Lumber Volume Calculator: Board Feet, Cubic Meters & Cost