Calculate exact drywall sheets, joint compound (mud), screws, and total material cost for walls and ceilings.
🧱 Drywall Calculator
Wall + Ceiling Area
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4×8 Sheets Needed
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Joint Compound (lbs)
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💡 Pro Tip
Order 10–15% more sheets than calculated. Drywall cuts rarely line up perfectly, and extra sheets prevent mid-project delays.
Frequently Asked Questions
Q: How many drywall sheets for a 12x12 room?
A 12x12 room has about 480 sq ft of wall area (8ft ceiling). At 32 sq ft per 4x8 sheet, you need ~16 sheets (plus extra for waste).
Q: What thickness drywall should I use?
Use 1/2 inch for most walls and ceilings. Use 5/8 inch (Type X) for garage walls and ceilings for fire resistance.
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