How much drywall for a 400 sq ft?
A 400 sq ft drywall project is pre-filled below. Adjust any value to match your exact job.
Your project
Standard size shown by default. Change any value — the answer recomputes instantly.
You need
144x8 sheets (32 ft²)
Exact need: 13 4x8 sheets (32 ft²) · plus 10% waste allowance
Material cost
$154–$252
Installed (US avg)
$766–$1,080
Shopping list
| ITEM | QTY | PRICE RANGE |
|---|---|---|
| 4x8 sheets (32 ft²) | 14 | $154–$252 |
| Estimated material total | $154–$252 |
Companion materials
- Drywall screws: 448 screws (≈ 2 lb)
- Joint compound: 3.3 gallons
- Joint tape: 167 ft
Alternative buy formats
- 10 × 4x12 sheets (48 ft²) — $160–$260