Construction

Plywood Calculator

Estimate plywood sheets needed for an area.

Area to cover

Sheet size

Waste (%)

Calculated Output

Sheets needed (sheets) 14

Formula: sheets = area × (1 + waste) ÷ sheet size

Step-by-Step Breakdown

1. Values used:

2. Area to cover = 400

3. Sheet size = 32

4. Waste = 10 %

6. Sheets needed = 14sheets

Did this calculator solve your problem today?

The math behind it

sheets = area × (1 + waste) ÷ sheet area, rounded up. A 4×8 sheet = 32 ft².

400 ft² with 10% waste → 14 sheets.

Subfloor vs wall?

Same area math; just measure the surface you're covering.