Drywall Sheet Calculator
Estimate sheets, screws, joint compound and tape for a wall or ceiling area.
Enter your project details
Each dimension can use its own unit—for example feet for length and inches for thickness. Package counts are rounded up.
Formula and calculation steps
Quantity = adjusted area ÷ product coverage; packages are rounded up.- Start with 120 ft² after openings.
- Add 10% allowance.
- Apply selected product coverage and round up.
Worked example
Select the sheet size you will buy; the calculator rounds sheets and accessory packs up separately.
How to use this calculator
- Enter the wall or ceiling area.
- Choose sheet size.
- Review sheets plus screws, tape and compound.
Example: Select the sheet size you will buy; the calculator rounds sheets and accessory packs up separately.
Questions about this calculator
Do openings get subtracted?
Enter net area after doors and windows when you want a tighter sheet count.
Why round sheets up?
Sheets are sold whole; the calculator rounds up so you do not under-order.
Can I use mixed units?
Yes. Choose feet, inches, metres or centimetres and the calculator converts each input before calculating.
Is this a final material order?
No. Confirm drawings, product coverage, local code and site conditions before buying or building.
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<iframe src="https://www.buildcalclab.com/embed/drywall-calculator/?theme=light" width="100%" height="640" title="BuildWise calculator" style="border:0;max-width:720px"></iframe>Assumptions and references
Results are estimates based on the dimensions and values you enter. Verify final quantities, manufacturer coverage and site-specific requirements before ordering.
Last reviewed: July 2026 · Read our calculation methodology