Planning a drywall project? Our free online calculator accurately estimates the number of drywall sheets and the amount of joint compound (mud) you'll need. Input your room dimensions, sheet size, and waste factor for a precise material list, saving you time and money.
Formula:
1. Gross Wall Area: 2 × (Room Length + Room Width) × Room Height
2. Ceiling Area: Room Length × Room Width
3. Total Deductions: (Number of Doors × 21 sq ft) + (Number of Windows × 12 sq ft)
4. Net Drywall Area: (Gross Wall Area + Ceiling Area - Total Deductions) × (1 + Waste Factor / 100)
5. Number of Drywall Sheets: ceil(Net Drywall Area / (Sheet Length × Sheet Width))
6. Joint Compound (Gallons): Net Drywall Area × Gallonspersqftfactor
7. Joint Compound (Lbs): Net Drywall Area × Lbspersqftfactor