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Wallpaper Calculator (Rolls & Cost)
Estimate the number of wallpaper rolls and total cost for a room. Accounts for pattern repeat, doors, windows. Standard US double roll = 33 ft × 20.5 in.
LIFESTYLEEstimate the number of wallpaper rolls and total cost for a room. Accounts for pattern repeat waste, doors, and windows. Standard US double roll = 33 ft × 20.5 in.
Pattern repeat is the vertical distance before the design starts again — typical 18-24 inches for straight match. Random-match papers (no repeat) waste less. The calculator counts strips around the perimeter and divides by strips per roll (after subtracting repeat allowance per strip).
Disclaimer: Buy 1 extra roll for waste, mistakes, and future patching. Order from the same dye lot. Hang professionally if you've never papered before — fixing a wrong cut costs more than the labor.
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Frequently Asked Questions
What is the Wallpaper Calculator (Rolls & Cost) for?
Estimate the number of wallpaper rolls and total cost for a room. Accounts for pattern repeat waste, doors, and windows. Standard US double roll = 33 ft × 20.5 in.
How do I use the Wallpaper Calculator (Rolls & Cost)?
Pattern repeat is the vertical distance before the design starts again — typical 18-24 inches for straight match. Random-match papers (no repeat) waste less. The calculator counts strips around the perimeter and divides by strips per roll (after subtracting repeat allowance per strip).
How accurate are my wallpaper (rolls & cost) results?
Buy 1 extra roll for waste, mistakes, and future patching. Order from the same dye lot. Hang professionally if you've never papered before — fixing a wrong cut costs more than the labor.
Is the Wallpaper Calculator (Rolls & Cost) free to use?
Yes - every calculator on WhichCalc is completely free with no signup, no usage limits, and no tracking on the calculation itself. Results display instantly in your browser and your inputs are never sent to a server. Bookmark the page if you use this calculator regularly.
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