Enter room dimensions, roll coverage, and waste percentage to estimate how many wallpaper rolls to buy. Doors and windows are not deducted — increase waste for openings or pattern matching.
Enter your project dimensions and click Calculate to see your estimate.
Typical materials for a wallpaper project
Roll counts assume your entered coverage rate. Patterned paper may need extra for matching.
Wallpaper rolls are estimated from total wall area divided by roll coverage, with a waste allowance for trimming and layout scraps.
Results are planning estimates based on typical assumptions. Verify quantities with product labels and your project layout before purchase. How we calculate
Calculate total wall area from room perimeter and height, add your waste percentage, then divide by roll coverage in square feet. The calculator rounds up to whole rolls.
Add 10–15% for pattern matching, trimming, and mistakes. Large repeats and complex patterns may need 15–20%.
No. This calculator uses gross wall area. Waste percentage typically accounts for standard openings, but rooms with many openings may need a higher allowance.
Check the wallpaper label or retailer listing for square feet per roll. Single rolls and double rolls cover different amounts — enter the value for the product you are buying.
Yes. Patterns with large repeats require more wallpaper to align seams. Increase your waste percentage when matching bold or vertical patterns.
No. Roll count only. Paste or adhesive requirements depend on wallpaper type — prepasted, peel-and-stick, and traditional paste-the-wall products differ.
