How many screws per sheet of drywall?

Approximately 32 screws per 4x8 sheet — 16" OC into studs with screws every 8" on edges and 12" in the field.

How much joint compound do I need?

Plan for approximately 1 bucket (4.5 gal) per 16 sheets for three coats. This calculator estimates based on that ratio.

Should I use screws or nails for drywall?

Screws are strongly preferred. They do not pop like nails, provide better hold, and are required by many codes. Use a dimpler bit to set depth automatically.

Drywall Sheet Calculator

Calculate how many sheets of 4x8 drywall you need for walls and ceilings.

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Enter Your Measurements

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How to Use This Calculator

1Add up all wall square footage plus ceiling square footage.
2Select drywall thickness.
3Click Calculate — get sheets, screws, and joint compound.

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About This Material

Drywall (gypsum board, Sheetrock) comes in 4x8 sheets (32 sq ft each). Use 1/2" for walls, 5/8" Type X for fire-rated assemblies and ceilings. Lightweight drywall is easier to handle but slightly more expensive.

Installation Tips

•Hang ceilings first, then walls.
•Stagger joints — no H-joints.
•Use 1-1/4" screws for walls, 1-5/8" for ceilings.
•Drive screws dimple-deep but do not break paper.

Common Mistakes to Avoid

Not staggering joints — H-joints crack.
Over-driving screws and breaking the paper face.
Running boards parallel to joists on ceilings — perpendicular reduces sag.
Skipping the mechanical room wall — always drywall even in unfinished areas.