To make this process easier for you, we've provided a wallpaper calculator on every product page.  Simply enter your dimensions (height & width) and our calculator will provide you with the quantity of rolls you will need to order for your project. We’ve even taken the design repeat into consideration when calculating how many rolls you will need. If it’s a little confusing please don’t hesitate to email us at care@fleurharris.com with the wall dimensions (height and width) of each wall you’d like to cover with wallpaper and we can calculate how many wallpaper rolls you’ll need for you. It can be a bit complicated to figure out and we’re more than happy to help!