Drywall Calculator
Calculate drywall sheets, screws, joint tape, and joint compound for a room. Subtract windows and doors for accurate totals.
Inputs
Result
Sheets
18
Coverage
504 ft²
Sheet size
4' × 8'
- Screws
- 576
- Joint tape
- 76 ft
- Joint compound
- 7 buckets
Waste default: 10% — USG recommends a 10% allowance for cuts at corners and openings.
Diagram
Estimates only. Verify with a licensed contractor or supplier before purchasing. Rough Estimator! is not responsible for shortages, overages, or material variances. See our methodology for formulas and sources.
Formula
Sheets = ceil((wall + ceiling − openings) × 1.10 ÷ sheet area)
Related tools & materials
Calculators
Don't forget
- Joint compound
- Drywall tape
- Corner bead
- Primer
- Paint
Frequently asked questions
For a 12×12 room with 8-ft walls you need about 12 sheets of 4×8 drywall after subtracting one door.
Cite this page
Cosyslabs. (2026). Drywall Calculator. Rough Estimator!. https://roughestimator.com/drywall-calculator
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