Wallpaper
Use this calculator to get a rough estimate of how much wallpaper you need to decorate a particular room.  We use standard size rolls of wallpaper and allow for an additional 10% for wastage.  The calculator does not make allowances for windows or door openings.
  Calculate wall size    
  Wall height (m)  
  Room perimeter (m)  
     
  Total wall size (m2)  
  Total rolls required rounded up