How the Wallpaper Roll Calculator works
Usable drops per roll and required drops are calculated separately so pattern repeat is respected.
How to use this tool
- Collect accurate values for wall perimeter, wall height, roll length.
- Enter measurements in the displayed units and select the choices that match this project.
- Select Calculate / Generate, then compare the outputs with the stated Wallpaper Roll Calculator method.
- Apply the result only after checking product specifications and real site conditions.
Example calculation or use case
For a worked Wallpaper Roll Calculator example, use Wall perimeter = 15 m, Wall height = 2.7 m, Roll length = 10.05 m, Roll width = 0.53 m. The tool then applies this method: Usable drops per roll and required drops are calculated separately so pattern repeat is respected.