Free Drywall Calculator
Calculate Drywall Sheets for Walls & Ceilings
Sum of all wall lengths
Standard: 8, 9, or 10 ft
📋 Drywall Calculation Guide
- Wall Area = Perimeter × Height
- 4×8 sheet = 32 sq ft | 4×12 = 48 sq ft
- Add 10% for waste and cuts
❓ Drywall Calculator FAQ
How many drywall sheets do I need?
Area = Perimeter × Height. Sheets = Ceil((Area × 1.1) ÷ 32). 4×8 = 32 sq ft.
How many sq ft in a 4×8 drywall?
4’×8′ = 32 sq ft. 4’×12′ = 48 sq ft.
What size drywall for walls?
Walls: 1/2\” 4×8. Ceilings: 5/8\”. Garage: 5/8\” Type X.
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