🗓️ Last updated: May 2026·Calculation assumptions shown below
Material Calculator

🧱 Drywall Calculator

Calculate sheets of drywall for walls and ceilings. Includes fire rating guide, hanging tips, and weight estimate.

📐 Room Dimensions
⚙️ Sheet Options
Sheets of Drywall
sheets
Wall Area
sq ft
Est. Weight
lbs total
Est. Material Cost
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Frequently Asked Questions

How many drywall sheets do I need?
Calculate total square footage (walls minus doors and windows), divide by 32 for 4x8 sheets. Add 10% for waste.
What thickness drywall should I use?
Standard walls: 1/2 inch. Ceilings: 5/8 inch. Garage walls near living spaces: 5/8 inch Type X fire-rated.
How much does drywall cost?
Sheets cost $12-25 each. Installation runs $1.50-3.50 per square foot. A standard 12x12 room needs about 8 sheets.