Wallpaper Calculator
Enter wall dimensions and roll size to estimate how many rolls of wallpaper you need.
Optional. Subtract windows/doors from the total wall area.
Use 5?10% to account for trimming and pattern matching.
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How wallpaper rolls are calculated
Wall area is calculated using wall width and height. Inputs are converted to meters for consistent area calculations.
Roll coverage is calculated by multiplying roll width and roll length. The number of rolls is the effective wall area divided by roll coverage.
A waste allowance is added to account for trimming, pattern matching, and installation errors.