Home & DIY Calculators

Drywall Calculator

Enter total wall/ceiling area, sheet size, and waste allowance to calculate drywall sheets needed.

28 sheets
880 sq ft needed with waste allowance

This is a straightforward area-based estimate — it doesn't account for room layout or optimal sheet placement, so actual cut waste can be higher for rooms with lots of corners, windows, or odd angles.

How to use this tool

  1. 1Enter total wall and/or ceiling area.
  2. 2Choose your drywall sheet size.
  3. 3Enter a waste allowance for cuts.
  4. 4See sheets needed.

Frequently asked questions

What drywall sheet size is most common?+

4×8 ft is the most common size for easy handling, though 4×12 ft sheets reduce seams on taller or longer walls.

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