Drywall Calculator

Calculate the number of drywall sheets needed for a room.
Calculator
Enter your values
Results
4x8 Sheets Needed
19
Total Area
528.0 sq ft
Drywall Analysis
Room coverage details

Area Breakdown

Walls: 384.0 sq ft. Ceiling: 144.0 sq ft. Total: 528.0 sq ft.

Sheet Options

You need 19 standard 4x8 sheets. If using 4x12 sheets (48 sq ft), you would need approx 13 sheets.

Finishing Materials

Estimate approx 5-6 lbs of joint compound and 35-40 ft of tape per 100 sq ft of drywall. For this room: ~29 lbs mud, ~201 ft tape.

How to Use

Step-by-step instructions
  1. 1Enter the room length and width (in feet).
  2. 2Enter the wall height (in feet).
  3. 3Check "Include Ceiling" if you are drywalling the ceiling too.
  4. 4The calculator will estimate the number of 4x8 sheets needed.

Sheet Estimation

Calculates the number of 4x8 sheets needed to cover the walls (and optionally ceiling). Includes 10% wastage.
Sheets = Total Area / 32

Variables:

Wall AreaPerimeter x Height
Ceiling AreaLength x Width
Sheet Area32 sq ft (4x8)

Example

12x12 Room

Inputs:

Size:12 ft x 12 ft
Height:8 ft
Ceiling:Yes

Steps:

  1. 1.Wall Area = 2 * (12 + 12) * 8 = 384 sq ft
  2. 2.Ceiling Area = 12 * 12 = 144 sq ft
  3. 3.Total Area = 528 sq ft
  4. 4.Sheets = 528 / 32 = 16.5 -> 17 sheets
  5. 5.+10% Wastage = 19 sheets
Result:
19 Sheets

Frequently Asked Questions

What about windows and doors?

It is common practice to ignore openings when estimating drywall to account for wastage and cutting.