Determine the square footage of each wall to be covered by multiplying the ceiling height by the wall width.
Add the square feet of all walls together to get the total square footage.
Sq. ft. in wall 1 +
Sq. ft. in wall 2 +
Sq. ft. in wall 3 +
Sq. ft. in wall 4 =
Total number of sq.ft. to be covered.
Divide the total sq. ft. by 25 to determine how many single rolls you will need. The number 25 allows for a large repeat pattern to ensure you will have plenty of wallpaper for your projects.
All wallpaper is sold in double rolls. So after you get your number in step 3 divide it by two to figure how many double rolls you will need.
Need a Border?
Most rolls of borders have 5 yards or 15 feet per roll. To calculate how much border you will need follow this calculation:
Width in wall 1 +
Width in wall 2 +
Width in wall 3 +
Width in wall 4 =
Total width for all 4 walls.
Take the total width and divide by 15 feet = number of rolls of border you need.