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Drywall Calculator - Sheetrock Estimation

Free drywall calculator. Calculate how many drywall sheets you need for walls and ceilings. Includes screw estimates.

Calculate drywall sheets needed

Enter your values to see results

and click the "Calculate" button

Drywall Calculator

Estimate how many drywall sheets you need for your project. Includes waste factor for cuts and mistakes.

Sheets = (Wall Area - Openings) / Sheet Size × 1.10

Calculate net area, divide by sheet square footage, add 10% for waste from cuts and damaged pieces.

How much waste should I plan for?

Plan for 10% waste for simple rooms, 15% for complex layouts with many cuts. Buy an extra sheet or two for repairs.

What sheet size should I use?

4×8 is standard and easiest to handle. 4×12 sheets reduce joints on 8-foot walls hung horizontally.

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