Drywall sheets by room size
| Room (8 ft walls) | Walls + ceiling | 4 × 8 sheets (with 10%) | Cost at $15/sheet |
|---|---|---|---|
| 10 × 10 ft | 420 sq ft | 15 | $225 |
| 12 × 12 ft | 528 sq ft | 19 | $285 |
| 12 × 14 ft | 584 sq ft | 21 | $315 |
| 14 × 16 ft | 704 sq ft | 25 | $375 |
Use 5/8 inch sheets on ceilings if your joists are 24 inches apart, and moisture-resistant board in bathrooms.
Frequently asked questions
How many sheets of drywall for just the walls of a 12x12 room?
The walls are 384 square feet, so about 14 sheets of 4 × 8 with 10% extra.
How many drywall screws per sheet?
About 32 for a 4 × 8 sheet on walls with studs 16 inches apart: roughly one screw per square foot.
Last reviewed: 2026-10-31