Things You'll Need:
- Calculator
- Measuring tape
- Pencil
- Paper
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Step 1
Draw a diagram of the area you want to wallpaper.
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Step 2
Measure the length of the walls. Add the length of the walls together to calculate the perimeter of the area. As you measure, note your measurements on your diagram.
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Step 3
Measure the height of the walls.
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Step 4
Multiply the height of the walls by the perimeter to calculate the square footage.
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Step 5
Divide the square footage of your area by 25 to estimate the number of rolls of wallpaper you will need. A single roll of wallpaper covers about 25 square feet.






