Wallpaper Calculator
Calculate how many rolls of wallpaper you need. Accounts for doors, windows, and pattern repeat waste.
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0 for no pattern, adds 15% waste
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Frequently Asked Questions
What is a standard wallpaper roll?
American single rolls are typically 21 inches wide by 33 feet long, covering about 57 sq ft. Euro rolls are often 21" x 33". Always check your specific product.
What is pattern repeat?
The distance between identical points in the wallpaper pattern. Larger repeats create more waste because you have to align patterns between strips. Allow about 15% extra for patterned wallpaper.
Should I buy extra rolls?
Always buy 1-2 extra rolls from the same dye lot. Dye lots vary between production runs, making exact color matches difficult later.
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