Project Tools

Drywall Calculator

Area Measurements
Walls (in ft.) Height x Room Perimeter
Ceiling (in ft.) Length x Width
Excluded Area (in ft.) Height x Width
Sloping Wall (in ft.) Height x Width
Total Drywall Area: sq. ft.
Total 4x8 Sheets You Need: sheet(s)


Tips on Measuring for Drywall
Before you begin, take the room measurements in the list below � round to the nearest foot. If you have sloping walls, follow the special case instructions on how to determine this square footage. A 10 percent waste allowance is automatically added to the total.

  • 1. Wall Height
    Measure from floor to cieling.
  • 2. Wall perimeter for areas you plan to drywall
    Measure the length of each wall. Add all length figures together to obtain the total horizontal distance, or perimeter.
  • 3. Ceiling width and length
    Omit if you do not plan to drywall your ceiling.
  • 4. Excluded sections
    Measure the height and width of each area separately. Add all widths into one total. Add all heights into a second total.
  • 5. Sloping walls
    Sloping walls form a triangular wall space. To calculate a triangle�s square footage, multiply the length of the wall at the base of the triangle by its height and divide by 2.


Homeowner's Tip - Standard drywall sheets are 4 x 8 feet

Are You a Quality Pro? Contractors Join Here

We're growing! So we'd like to know your favorite...

And More...