Drywall Sheet Calculator
Add the wall and ceiling area of a room, subtract 21 sq ft per door and 15 sq ft per window, apply your waste percentage, and convert the result into 4×8 drywall sheets plus rough tape and joint compound quantities.
Drywall Sheet Calculator
Add the wall and ceiling area of a room, subtract 21 sq ft per door and 15 sq ft per window, apply your waste percentage, and convert the result into 4×8 drywall sheets plus rough tape and joint compound quantities.
Method and assumptions
Figur turns your measurements into purchase quantities with standard geometry: it computes the area, length, or volume, applies the waste or spacing you enter, and rounds up to whole purchase units. Everything is calculated locally in your browser.
- Purchase quantities round up to whole units (sheets, bundles, boards, bars, or packages) because suppliers do not sell fractions.
- Assumed coverages and package sizes (for example, 3 bundles per square or 4×8 sheets) are common conventions; verify your product label and supplier.
- The waste percentage is applied exactly as entered; complex cuts, patterns, and damage can require more.
- The result does not replace your field measurements, plans, or local code requirements.
This tool provides a planning takeoff, not a binding bid, structural design, or engineering advice. Confirm quantities with field measurements, your supplier, and the applicable professionals before buying.
Sources and references
No external data source is required: this calculator applies standard geometry to the measurements, coverages, and waste you enter.
Frequently asked questions
What sheet size does this assume?
It assumes 4 × 8 ft sheets covering 32 square feet each. If you hang 4 × 12 sheets, divide the ordered area by 48 instead, or expect the sheet count to run high.
How are tape and compound estimated?
The calculator uses common rules of thumb of roughly 0.37 feet of tape and 0.053 pounds of ready-mix compound per square foot of drywall, rounded up to whole units.