Wallpaper Calculator

Enter your wall widths, ceiling height and roll dimensions to get the number of rolls to buy.

Wall 1 Width (m)Wall 2 Width (m)Wall 3 Width (m)Wall 4 Width (m)Ceiling Height (m)Roll Width (cm)Roll Length (m)Waste Allowance (%)

Total Wall Area35 m²

Area per Roll5.33 m²

Total Area Including Waste40.25 m²

Rolls needed: 8

What does this tool calculate?

It adds up your wall areas, divides by the usable area of a single roll, and adds your chosen waste percentage for pattern matching and trimming.

Wallpapers with a repeating pattern usually need a higher waste allowance than plain wallpaper, since each strip has to align with the next.