Drywall Calculator
Estimate drywall panels needed for walls and ceilings.
How It Works
Total area = Wall area + Ceiling area. Sheets = ceil(Total area ÷ Sheet area).
Example
800 sq ft of walls + 200 sq ft of ceiling = 1,000 sq ft → 32 sheets of 4×8.
Frequently Asked Questions
What sheet size should I use?
4×8 is standard. 4×10 and 4×12 reduce seams and waste on taller walls.
How much drywall does a sheet cover?
A 4×8 sheet covers 32 sq ft; 4×10 covers 40; 4×12 covers 48.
Should I add waste?
Yes, 5–10% for door/window cutouts and mistakes.