Wallpaper Calculator
Work out how many rolls of wallpaper you need, allowing for pattern repeat.
Rolls for the walls
Wallpapering means covering your wall area with rolls of a known size, which sounds like simple division but is complicated by pattern matching. This works out how many rolls you need from the room's dimensions, so you buy enough to finish the job.
Enter the room size to see the rolls required.
The pattern repeat eats paper
The factor that catches people out is the pattern repeat. To make the design line up across adjoining strips, you often have to waste part of each drop, and the larger the repeat, the more you lose — a big, bold pattern can waste a surprising amount compared with a plain or small design. That is why you should always buy extra, and specifically buy all your rolls from the same batch, since colours can differ subtly between runs and a mismatch is glaring on a finished wall.
Frequently asked questions
Why does the pattern repeat matter?
Because matching the design across strips wastes part of each drop, and a large repeat wastes more, so patterned paper needs extra rolls.
Why buy all rolls from one batch?
Colours can vary subtly between production runs, and a mismatch is very visible on a wall, so same-batch rolls are essential.
Is anything uploaded?
No. The calculation happens in your browser.