Drywall Screw Quantity Calculator
Calculate the total number of drywall screws needed for walls and ceilings based on panel area, screw spacing, and a waste allowance.
Formulas Used
Net Area = (Length × Height) − Openings Area
Panels Required = ⌈Net Area ÷ Panel Area⌉
Stud Lines per Panel = ⌊(Panel Width in inches ÷ Stud Spacing)⌋ + 1
Screws per Edge Stud Line = ⌈Panel Height in inches ÷ Edge Spacing⌉ + 1
Screws per Field Stud Line = ⌈Panel Height in inches ÷ Field Spacing⌉ + 1
Screws per Panel = (2 × Screws per Edge Line) + ((Stud Lines − 2) × Screws per Field Line)
Raw Screws = Panels × Screws per Panel
Total Screws = ⌈Raw Screws × (1 + Waste % ÷ 100)⌉