The calculation, explained.
Required coverage = net area × (1 + allowance/100). Whole packs round up from required coverage ÷ pack coverage. Thermal suitability and assembly requirements are separate decisions.
Review the example assumptions and results
- Net area
- 360 ft²
- Extra material
- 10 %
- Pack coverage
- 40 ft²
- Material required
- 396 ft²
- Purchase packs or sheets
- 10
- Purchased coverage
- 400 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.
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Estimate drywall sheets using wall area, openings, sheet coverage and waste allowance. See required coverage and rounded purchase quantities.
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Estimate stud positions for a straight wall run using maximum spacing and entered extras. This quantity estimate does not design load-bearing framing.
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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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