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BuildRight
Total area divided into standard 4×8 sheet coverage, rounded up.
Doors, windows, and outlets reduce the drywall actually needed, but most installers still buy full sheets and cut around openings — this calculator estimates from gross area, which tends to build in a reasonable natural buffer.
Longer 4×12 sheets are available and reduce the number of seams to tape and mud on tall or long walls — if using a different sheet size, just divide your area by that sheet's square footage instead of 32.
Sheets needed
16
Based on standard 4×8 ft drywall sheets (32 sq ft each).
What you entered
Divide by sheet area (4×8 ft = 32 sq ft)
500 ÷ 32= 15.625 sheetsRound up to a whole number of sheets
⌈15.625⌉= 16 sheetsResult
Sheets needed: 16
500 sq ft of wall/ceiling needs 16 standard 4×8 ft drywall sheets.