Spike's Calculators

# Drywall Materials Calculator

Calculate the number of drywall boards needed from the square footage of an area you are boarding.

The calculation divides the area that needs to be boarded by the square footage in a drywall board.

This calculator uses Imperial measurements and can be used for walls and ceilings.

### Drywall Materials Calculated from Square Footage

Square Footage to be Boarded ft²
Board Size length:
width:
ft
ft
Waste Percentage %

#### Results:

 Boards Needed # Boards Needed Including Waste # Length of Tape Needed ft Number of Screws # Ready-Mixed Joint Compounds lbs Lightweight All Purpose Joint Compound gal

#### The Calculation

1. the area that needs to be boarded measured in square feet
2. the size of board you are using
3. add a waste factor in a percentage

#### Results

1. number of drywall boards needed
2. number of boards including waste factor
3. tape needed in lineal feet of tape
4. number of screws needed
5. standard joint compound in lbs
6. lightweight all purpose compound in gallons (easier to work with)

#### Example:

• The ceiling in a room is 12' by 24'. Calculate the square footage of the ceiling by multiplying 12 * 24, which gives a total of 288 square feet for this ceiling.
• If the drywall you are using is a 4' x 8 ' board, the square footage of one of these boards is 4 * 8 = 32 square feet.
• To calculate the number of boards needed to cover the ceiling, divide the square footage of the ceiling by the square footage of one board.
• 288 ÷ 32 = 9.
• In theory, you can cover this ceiling with 9 of these 4' x 8' boards. It will depend on the layout of the ceiling joist.