🟫 Plywood Calculator
Area and sheet size
Length
Width
…or area directly
Sheet size
4 × 8 ft — standard sheet (32 sq ft)
2440 × 1220 mm — metric sheet (2.98 sq meters)
Roof pitch
(roofs only — leave flat for floors and walls)
Flat — floor, wall or ceiling
3 / 12
4 / 12
5 / 12
6 / 12
7 / 12
8 / 12
9 / 12
10 / 12
12 / 12
Waste allowance (%)
(extra for cuts, spills and uneven ground — 10% is the usual rule)
Calculate sheets
Calculator by
CalcCoverage
— free DIY & home-improvement calculators