HOW IT IS CALCULATED
Estimate wallpaper rolls
Calculate total wall area, add waste and divide by the coverage provided by each roll.
Instant resultClear formulaRuns locally
01Values
02wall area × (1 + waste) ÷ roll coverage
03Result
The number of rolls is always rounded up.
Pattern matching can require extra material
A simple area estimate cannot fully model pattern repeats or complex cutting layouts.
02
In short
What logic does the calculator use?
wall area × (1 + waste) ÷ roll coverage
Example?
The number of rolls is always rounded up.