Region / Unit System: USA (ft, in) Australia / Europe (m, mm) Deck Shape Rectangle L-shaped T-shaped Trapezoid Irregular / Custom Polygon Length ft in Width ft in Main Length ft in Main Width ft in Extension Length ft in Extension Width ft in Flange Length ft in Flange Width ft in Stem Length ft in Stem Width ft in Top Width ft in Bottom Width ft in Height ft in Total Deck Area ft² in² Square footage / meterage is used to approximate board layout. Board Width in Board Length ft Gap Spacing in Joist Spacing in Wastage Factor (%) Estimated Material Cost (per sq ft) $ Calculate Reset Material Estimate Total Area 0 Deck Boards Required 0 Total Linear Footage / Meterage 0 Estimated Joists 0 Estimated Fasteners (Screws) 0 Total Estimated Material Cost N/A