Drywall Calculator
Sheets of drywall plus screws, tape, and joint compound.
Buy this many sheets
15
4x8 drywall (10% waste)
Wall area: 352 sq ft
Ceiling area: 120 sq ft
Doors and windows: -51 sq ft
Total to cover: 421 sq ft
Exact sheets: 13.16
Screws
480
Joint tape (ft)
169
Compound (lbs)
23
Standard door subtracts 21 sq ft, window 15 sq ft. Larger sheets mean fewer seams to tape but they are heavier and harder to maneuver alone. Compound estimate covers two coats and skim.
About
Type room dimensions, doors, and windows. Get the number of sheets to buy (4×8, 4×10, or 4×12) plus screws, joint tape, and mud. Includes 10 percent waste.
How to use
- Enter room length, width, and ceiling height.
- Subtract doors and windows.
- Get sheet count, screws, tape, and compound.
FAQ
Bigger sheets or smaller?+
12 ft sheets mean fewer butt joints to tape, but they're 90+ pounds. For solo work, 4x8 is friendlier. With a helper, go bigger.