How many square feet are in a 4x8 sheet of drywall?

A standard 4x8 foot drywall sheet covers exactly 32 square feet. A larger 4x12 foot sheet covers 48 square feet.

How much joint compound (mud) do I need per sheet of drywall?

Rule of thumb: You need approximately 1 gallon of joint compound per 100 square feet of drywall (or one standard 4.5-gallon bucket for every 14 sheets of 4x8 drywall).

Drywall Sheet Calculator & Materials Estimator

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Total Surface Area

208 sq ft

With 10% waste buffer

Drywall Panels to Buy
            7
            sheets
          
Standard 4' x 8' (1/2" thick)

1. Dimensions (Feet)

Wall Length (Feet)

Wall Height (Feet)

Doors & Windows Deduction (Sq Ft) Standard door is ~21 sq ft (3'x7'), window ~15 sq ft

2. Sheet Size & Framing Specs

Sheet Dimensions

Stud Spacing (On Center)

Waste Factor

Drywall Type

Complete Renovation Shopping List

Quantities ready for checkout at Home Depot or Lowe's:

Frequently Asked Questions

Should I hang drywall horizontally or vertically?

For residential walls with 8-foot or 9-foot ceilings, hanging sheets horizontally is recommended by professional tapers. It reduces total linear seam length by about 25% and places the main joint at comfortable waist height for taping and sanding.

What drywall screws should I use?

For 1/2-inch drywall into standard wood studs, use 1-1/4 inch coarse thread drywall screws spaced every 12 inches on ceilings and 16 inches on walls.

📦 Recommended Gear & Materials on Amazon

🛒 Stainless Drywall Taping Knife Set Finishing 🛒 Drywall Mud Pan with Grip Tools 🛒 Drywall Screw Setter Dimpler Bits Fasteners

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