Drywall Calculator

Calculate how many sheets of drywall you need for walls and ceilings. Includes joint compound and screw estimates.

Results are estimates only — actual material needs vary by site conditions, waste, and product specifications. Always verify quantities with a qualified contractor before purchasing. HandymanCalc is not liable for material shortfalls or overages.

Wall Area
sq ft
Sheet Size
FAQ

Frequently Asked Questions

3 questions
Q1 What size drywall sheets should I use?
4×8 ft sheets are standard for walls. 4×12 ft sheets reduce seams on tall walls and ceilings but are heavier and harder to handle alone.
Q2 How much joint compound do I need?
Plan for approximately 0.053 gallons of joint compound per square foot for three coats — roughly one 4.5-gallon bucket per 500 sq ft.
Q3 What thickness drywall for ceilings?
Use 5/8 inch drywall for ceilings to prevent sagging, especially when joists are 24 inches on center. 1/2 inch is fine for walls.