Drywall Calculator
Calculate exactly how many drywall sheets you need for any room. Deduct doors and windows, choose sheet size, add waste, and get a material cost estimate.
Drywall Sheet Calculator
Results update instantlyLength
ft
in
Width
ft
in
Height
ft
in
$per sheet
Sheets per 100 ft² — All Sheet Sizes
| Sheet Size | Area (ft²) | Per 100 ft² | +10% Waste | Best For |
|---|---|---|---|---|
| 4×8 ft | 32 | 4 | 4 | Most common |
| 4×10 ft | 40 | 3 | 3 | Tall ceilings |
| 4×12 ft | 48 | 3 | 3 | Fewer seams |
| 4×16 ft | 64 | 2 | 2 | Large spans |
How to Use
- 1Enter room length, width, and ceiling height
- 2Check Include Ceiling if drywalling the ceiling
- 3Add doors and windows using presets or custom sizes
- 4Choose drywall sheet size and waste percentage
- 5See sheets needed, net area, and optional cost
Standard Opening Sizes
Interior Door32"×80"
Exterior Door36"×80"
Sliding Door72"×80"
Small Window24"×36"
Standard Window36"×48"
Large Window48"×60"