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Drywall Per Room Calculator

Room Length (ft)

Room Width (ft)

Ceiling Height (ft)

Sheet Size (1=4x8,2=4x12)

Sheet Size

Finish Level

Waste Factor

Result

—sheets total

◆ LIVE 3D PREVIEW

Ceiling Sheets

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Wall Sheets

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How to Calculate Drywall Room

Use this free drywall room calculator to get instant, accurate results for your construction project. Simply enter your measurements above and the calculator will automatically compute the result using industry-standard formulas.

Pro Tip: Always add 10-15% extra material to account for waste, cuts, and job-site conditions. This is standard practice recommended by experienced contractors.

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💡 Pro Tips — Drywall Room

Use 4×12 sheets where possible — fewer joints means less taping and a smoother finish.
Level 4 finish is standard for most painted walls. Level 5 needed for gloss paint or critical lighting.
Screw spacing: Every 12" on edges, 16" in the field. That's ~32 screws per 4×8 sheet.
Let mud dry completely between coats (12-24hrs). Rushing causes cracking and bubbling.
5/8" drywall required on ceilings (sag-resistant) and for fire rating between garage and house.

❓ Frequently Asked Questions

+How many screws per sheet?

About 32 screws per 4×8 sheet. Space 12" apart on edges and 16" in the field. Always hit the studs.

+How much joint compound per sheet?

One 4.5-gallon bucket covers 8-12 sheets. Apply 3 coats: taping coat, blocking coat, and skim coat.

+What thickness for ceilings?

5/8" drywall for ceilings (sag-resistant). Also required between garage and living space for fire rating.

+What level of finish do I need?

Level 3: behind cabinets, garages. Level 4: standard walls with flat/eggshell paint. Level 5: walls with gloss paint or critical lighting.

Drywall Per Room Calculator

How to Calculate Drywall Room

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💡 Pro Tips — Drywall Room

❓ Frequently Asked Questions