Drywall Calculator – Sheets Needed for Any Room
Calculate drywall sheets needed for walls and ceiling in any room.
About This Calculator
Calculate drywall sheets needed for walls and ceiling in any room. Use the calculator above for instant results.
Worked Examples
- Walls: 630 sq ft + ceiling: 300 = 930 sq ft
- With 12% waste: 1,042 sq ft → 33 sheets
Answer: 33 sheets
- Total: 616 sq ft + 12% = 690 sq ft → 22 sheets
Answer: 22 sheets
- 80 sq ft + waste → 3 sheets
Answer: 3 sheets
Who Uses This Calculator?
Estimate sheets for any room.
Calculate drywall for renovations.
Bid drywall work accurately.
Plan drywall installation.
Common Mistakes to Avoid
❌ Not accounting for windows and doors
Subtract ~20 sq ft per door and ~15 sq ft per window from wall area for large openings.
❌ Using exact sheet count
Always add 10-15% waste for cuts, damaged sheets, and future repairs.
Frequently Asked Questions
Standard drywall sizes?
4x8 ft (most common), 4x12 ft (fewer seams, harder to handle). Thickness: 1/2 inch (standard), 5/8 inch (fire rated, soundproofing).
Types of drywall?
Standard: most rooms. Moisture resistant (green): bathrooms/kitchens. Fire rated (type X): garages, shared walls.
How to hang drywall?
Ceiling first, then walls. Hang perpendicular to joists/studs. Stagger joints. Butt ends on studs.