Tool
Drywall Calculator
Estimate how many 4x8 drywall sheets you need for a wall area.
Construction Calculators
What this tool does
Convert total wall or ceiling area into a sheet count based on standard 4×8 ft panels. Helpful for renovation budgeting and material orders.
How to use
- Measure and enter the total wall or ceiling area in square feet.
- Review the number of 4×8 sheets required.
- Add extra sheets manually for waste, doors, and windows.
Examples
400 sq ft room walls
Input: Wall area: 400 sq ft
Output: Drywall sheets needed (4x8): 13
400 ÷ 32 sq ft per sheet = 12.5, rounded up to 13 sheets.
Assumptions
- Each 4×8 sheet covers 32 square feet.
- Sheet count is rounded up to the nearest whole panel.
- Results are material estimates only, not labor or finish costs.
Common use cases
- Estimate drywall for room remodels
- Prepare material lists for basement finishing
- Compare sheet counts across layout options
FAQ
What sheet size is assumed?
This calculator assumes standard 4×8 ft sheets (32 sq ft each).
Are doors and windows subtracted?
Enter net wall area after subtracting openings for best accuracy.
How much extra should I order?
Many contractors add 10–15% for cuts, breakage, and future repairs.
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Last reviewed: 2026-05-23