Plywood Calculator
Divides sheathed area by 32 square feet per full sheet. Good for subfloor and wall sheathing takeoffs.
Step 1: Units
Step 2
Enter project measurements
Use decimals if needed (e.g. 3.5).
Step 3
How to use this calculator
Enter net area to cover. Add waste for window cutouts and staggered seams.
What the math is doing
Sheets = ceil((sq ft × (1+waste)) ÷ 32).
Frequently asked questions
4×9 or metric sheets?
Divide by actual sheet area manually.
Tongue and groove?
Same area math; waste may rise.
Exposure rating?
Choose correct grade for wet service.
Clip spacing if shown?
That is fastening, not sheet count.