Below is an easy method to working out how much wallpaper you need to purchase to decorate your room.
Measure the height and width of your wall with a tape measure. To get the area of the wall, multiply both numbers and round off the result to the nearest whole number. Then we recommend you draw a diagram of the wall you’re planning on covering with wallpaper and include height, width and area on the diagram.
For an accurate idea on how much wallpaper you will need, measure the perimeter of the area you’re covering. Then divide this measurement by the width of the roll which is usually 52cm. You then should multiply the height of the surface by the wallpaper width. Then divide this length by the length of the wallpaper and round to the nearest whole number.