Drywall Calculator for Walls
Estimate drywall sheets for walls.
For walls, the area is the room perimeter × ceiling height. Standard 4×8 ft sheets cover 32 sq ft each (the calculator starts there). Most installers do not subtract small door and window openings — the offcuts rarely reuse.
Drywall Calculator
Estimate how much you need — and the cost.
- sq meters 10.22
Tip: Hang wall sheets horizontally in most homes — it puts the tapered seam at a comfortable height and uses fewer joints.
How it's calculated
A standard 4×8 ft sheet covers 32 sq ft; a 4×12 ft sheet covers 48 sq ft. Sheets = round up (wall + ceiling area × (1 + waste) ÷ sq ft per sheet).
See the full Drywall Calculator for the complete how-to, unit conversions, and data sources.
Drywall Calculator for Walls FAQ
How many sheets of drywall for a wall?
Divide the wall area (perimeter × height) by 32 sq ft per sheet and add about 10% for cuts. A 12 × 12 ft room's walls need roughly 14 sheets.
Should drywall be hung horizontally or vertically?
Horizontally in most homes — it reduces seams and places the joint at a convenient taping height. Commercial walls are often vertical.