Formula and Assumptions
Sheets = area x waste factor / sheet area, rounded up.
Actual conditions, local rates, product labels, and contractor recommendations can change the final quantity or cost.
Example Calculation
480 sq ft with 4 x 8 sheets and 10% waste needs about 17 sheets.
Tips
- Use moisture-resistant board where required.
- Plan seams before buying.
- Include ceilings separately if needed.
FAQ
Does this include joint compound?
No, it estimates sheets only.
Should I include waste?
Yes, cuts and mistakes require waste.
Can I use 4 x 12 sheets?
Yes, change sheet dimensions.
Does it include openings?
Subtract large openings before entering area.