Wallpaper Roll Calculator

Calculate how many wallpaper rolls you need from wall dimensions, roll size, and pattern repeat. Includes waste and drop matching. Runs locally in your browser.

Total wall length (m)

perimeter of all walls

Wall height (m)

floor to ceiling

Roll width (cm)

standard European = 53 cm

Roll length (m)

standard = 10 m

Pattern repeat (cm)

0 for random match

Enter wall and roll dimensions.

Drop length = ceiling(height ÷ repeat) × repeat when repeat > 0. Drops per roll = floor(roll_length ÷ drop_length). Total drops = ceil(wall_length ÷ (roll_width ÷ 100)). Adds 10% waste allowance. Runs locally — nothing leaves your browser.