For accuracy, you can deduct windows and/or doors and round your measurements up to the nearest foot when entering. We are not responsible for customer supplied measurements or calculations. Calculating wallpaper for ONE room: Enter the width, length and height of the room. Width: ft Length: ft Height: ft Total Square Footage: 0 # of Single Rolls*: 0 Calculating wallpaper for different wall. Enter the width and height of the rooms. Wall #1 Width: Height: Wall #2 Width: Height: Wall #3 Width: Height: Wall #4 Width: Height: Wall #5 Width: Height: Wall #6 Width: Height: Wall #7 Width: Height: Wall #8 Width: Height: Total Sq. Footage: 0 # of Single Rolls: 0 *This is an estimate only. Contact us for a FREE in-home estimates!