How to Use This Drywall Calculator
1. Enter room length, width, and ceiling height.
2. Add doors & windows to subtract non-covered areas.
3. Set waste factor (10% for simple rooms, 15% for corners/complex cuts).
4. Click calculate. Results update instantly.
Material Estimation Guide
• One 4x8 sheet covers 32 sq ft.
• Tape: ~1.2x wall area in linear feet.
• Mud: ~0.05 lbs per sq ft per coat (3 coats standard).
• Screws: ~32 per sheet for walls, 36 for ceilings.