Drywall Calculator
Estimate drywall sheet count from wall or ceiling area, sheet size and waste allowance.
Results
Project area
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Area including waste
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Sheets required
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Sheet coverage purchased
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Use whole-sheet quantities for purchasing and adjust the waste allowance for seams, cuts and layout complexity.
How it works
The calculator divides project area plus waste by the face area of one sheet and rounds up to a whole sheet.
sheets = ceil(area × (1 + waste %) ÷ sheet area)Worked example
A 12 ft × 8 ft surface is 96 ft². With 10% waste and 4 ft × 8 ft sheets, the estimate rounds up to 4 sheets.
Assumptions
- The entered project area represents the surfaces to be covered.
- Sheet dimensions are the nominal face dimensions.
Limitations
- Openings, seams, orientation, staggered joints and offcut reuse can change the practical sheet count.