Drywall Calculator

How Drywall Is Estimated

Calculate total wall area, subtract openings (doors ≈ 21 sq ft, windows ≈ 15 sq ft), then add ceiling area if needed. Divide by sheet size and add 10% waste for cuts. Always round up to whole sheets.

4×8 vs 4×12 Sheets

4×12 sheets mean fewer seams to tape on 9–10 ft walls, which means less finishing work. However, they're heavier and harder to handle solo. 4×8 sheets are the standard for most residential projects with 8 ft ceilings.

What Else You'll Need

For every 1,000 sq ft of drywall, budget approximately: 5 lbs of drywall screws, 370 ft of corner bead, 5 buckets of joint compound (pre-mixed), and 2 rolls of paper tape.