Drywall Calculator
Enter the room size, wall height and sheet size. The calculator covers all four walls and, if you choose, the ceiling, then adds waste for cuts. Don’t subtract doors and windows; the offcuts rarely get reused.
Longer sheets mean fewer seams to tape, but 4 × 12 sheets need two people to hang.
How it’s calculated
- Area = 2 × (length + width) × height, plus length × width for the ceiling.
- Sheets = area × (1 + waste %) ÷ sheet area (32 sq ft for 4 × 8).
- Per 1,000 sq ft: about 138 lb of ready-mix joint compound, 370 ft of tape and 1,000 screws.
Questions
- How many sheets of drywall for a 12 × 12 room?
- With 8 ft walls and the ceiling, about 528 sq ft: 19 sheets of 4 × 8 with 10% extra.
- How many screws per sheet of drywall?
- About 32 for a 4 × 8 sheet on walls, a few more on ceilings.