**How To Calculate Wallpaper Needed**. Multiply 3 lines by 224 ft width of the wallpaper 672 ft wide area that 1 roll will cover. The key is to take careful and accurate measurements because once you know how much surface area you need to cover your local home improvement store or wallpaper dealer can help you calculate how.

Say for example your wall is 410 metres wide and is 240m high. How to Calculate The Dimensions of Your Walls Measure the width of each wall where you would like to apply the wallpaper and add them all together Combined Width. Measure the height between the skirting and cornice or to the ceiling if you have no cornice.

### Common roll widths are EuropeanMetric 20 12 inch American rolls 27 inches and Commercial wallpaper that is available in various widths 36 48 54 and 60.

Wallpaper is manufactured in a variety of widths and lengths. Estimate the amount of Wallpaper needed for a Wall. The total given is the number of rolls not number of packages. The Great Collection of How to Calculate Wallpaper Needed for Desktop Laptop and Mobiles.