Calculate rolls needed factoring in pattern repeats
Our wallpaper pattern repeat calculator helps you accurately estimate how many rolls you need when working with patterned wallpaper. Pattern repeats require extra material to align designs between strips, and failing to account for this is the most common cause of running short mid-project.
The calculator factors in your pattern repeat length - the vertical distance before the pattern repeats - to determine actual usable length per strip. Large pattern repeats can waste significant material as you must cut each strip to start at the same point in the pattern for proper alignment.
This tool is essential for anyone hanging patterned wallpaper and asking "how many rolls of wallpaper do I need?" or "how does pattern repeat affect wallpaper quantity?" Accurate calculations prevent costly return trips to the store or mismatched dye lots from separate orders.
Follow these steps to calculate wallpaper with pattern repeats: