The calculation, explained.
Required coverage = (gross wall area − openings) × (1 + allowance/100). Sheets round up from required coverage ÷ sheet coverage. This does not optimize seam placement.
Review the example assumptions and results
- Gross wall area
- 400 ft²
- Openings
- 40 ft²
- Extra material
- 10 %
- Sheet coverage
- 32 ft²
- Material required
- 396 ft²
- Purchase packs or sheets
- 13
- Purchased coverage
- 416 ft²
How this tool works
Adjust the labeled inputs to see a new calculation. Units and assumptions are shown beside each field. Printed and copied results use the same calculation.
This is a planning estimate, not a structural design, permit document or binding quote. Check product specifications and actual site measurements.
A worked example for this tool
ConstructionHow Many Drywall Sheets Do You Need?
Drywall sheet counts begin with net wall area, then include extra material and sheet coverage. A sheet estimate does not establish seam placement.
Read the worked example ↗Keep going
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Estimate paint from room dimensions, openings, coats and coverage. Compare US or metric inputs and see whole-can quantities with your allowance.
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