Wallpaper Square Footage Calculator
Calculate wallpaper rolls needed for any room. Standard double rolls cover about 56 sq ft after pattern matching waste.
Wallpaper Calculator
How wallpaper is sold
Most wallpaper is sold in "double rolls" — a single bolt that contains two rolls' worth. A standard double roll covers 56 sq ft after typical pattern matching.
Some imported papers come in single rolls (28 sq ft). Always check the label, because the math is very different.
Pattern repeat = waste
Wallpaper patterns repeat at fixed intervals. A 19-inch pattern repeat means every strip starts at a 19-inch increment, so you waste material aligning patterns. The bigger the repeat, the more waste.
Add 15% for standard repeats (under 18 inches). Add 20% for large repeats (over 18 inches). Add 25% for very large or random match patterns.
Pro tips
Buy from the same batch
Like paint, wallpaper has dye lots. Specify same batch when ordering multiple rolls.
Save extra for repairs
Keep one full roll for future patches. Discontinued patterns are nearly impossible to match.
Plan seam locations
Pattern matching at corners is hard. Plan to start at the most visible wall and work toward less-visible ones.
Subtract openings
Doors, windows, and large openings should be subtracted just like with paint.