🎨 Decor & Color Palette
Wallpaper Roll & Pattern Waste Calculator
Ordering wallpaper is not the same math as ordering paint. Enter your wall or room measurements plus your roll specs and get the exact number of rolls to buy, with the pattern repeat and trim waste already built in so you are not left one roll short mid-project.
Wall dimensions
Openings on this wall
Wallpaper roll specs
▸ Advanced settings
Room dimensions
Doors i
Windows
Wallpaper roll specs
▸ Advanced settings
Papering more than one room in the same pattern? Add every room and get one combined roll count. This mode uses a standard door and window width for speed; use Single Wall or Whole Room for exact openings.
Wallpaper roll specs (shared across rooms)
▸ Advanced settings
Quick Reference Grid: Room Size vs. Rolls
Based on 9-foot ceilings, a 20.5-inch by 33-foot roll, a 12-inch pattern repeat, one door, and two windows. Use the calculator above for your exact room and roll.
| Room size | Wall width to cover | Rolls needed | With 10% buffer |
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Frequently Asked Questions
Use Our Other Tools
Still deciding on the finish, or need the rest of the color plan sorted first? These pair naturally with this project.
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