Calculators
Drywall Calculator — Sheets and Supplies
Drywall quantity starts with wall area: room perimeter times ceiling height, minus doors and windows. This layout is a 12 by 12 ft room with 8 ft ceilings and one door and one window in the math.
Sheets round up to whole 4×8 panels (32 sq ft each) with 10% waste. Joint compound, tape, and screws scale with sheet count.
Use controls below to add rooms or include the ceiling.
| Item | Area | Size | Buy |
|---|---|---|---|
| Walls | Room 1 | 349 sq ft | 12 sheets |
Assumptions
- Sheet size: 32 sq ft per sheet
- Waste factor: 10%
- Wall area (net): 349.0 sq ft
- Default door opening: 20 sq ft
- Default window opening: 15 sq ft
Supplies checklist
- Joint compound — ~4 buckets
- Paper tape — 1 roll
- Drywall screws — ~384
- Corner bead (if needed)
- Mud pan and taping knives
- Sanding screens or sponge
Estimates only. Check the coverage figure on your product before buying.
The Handy Pages · thehandypages.com
More drywall presets
Handy gear for hanging and finishing drywall
- Drywall screw assortment with a dedicated driver bit (opens in new tab)
- Joint tape and mud knives for seams and corners (opens in new tab)
- N95 or dust mask when cutting boards and sanding mud (opens in new tab)
- Work gloves for carrying sheets and handling fasteners (opens in new tab)
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