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# Drywall calculator

Estimate drywall sheets plus screws, tape, and compound for a room, with sheet sizes, a waste factor, and an optional cost total.

Enter the room to take off the boards.

Sheets are counted by area with the waste applied before rounding, per surface, which is how estimators order but not how installers plan: sheet orientation, stud height fit, and the seam layout are yours to check. Openings subtract in full, so a small window you would board over belongs in the waste allowance instead. Fire, moisture, and acoustic systems change sheet counts, screw counts, and compound coverage, and none of that is modeled here. Prices cover materials only.
Options

## More unit & math tools

- [Unit converter](/converters/units)
- [Fraction calculator](/converters/fractions)
[All unit & math tools](/converters)

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