Wallpaper Rolls Calculator
Work out how many rolls of wallpaper you need for a room from its wall perimeter or dimensions, allowing for openings and your paper's pattern repeat.
Estimate only. This is an indicative estimate, not a quote. Roll coverage and pattern repeats vary by wallpaper, check the manufacturer's guidance before ordering.
Enter your room dimensions
Your rolls needed and total cost appear here as you type.
How wallpaper rolls are estimated
A standard UK wallpaper roll is 10 metres long and 53cm wide, giving around 5m² of usable pasted area once you allow for trimming at the ceiling and skirting. We take your wall perimeter, either entered directly or worked out from a room's length and width, and multiply by the wall height to get the gross wall area, then deduct an openings allowance for doors and windows (10% is a reasonable default for an average room). Patterned papers need extra: a straight-match pattern typically needs around 10% more paper to keep the repeat aligned across drops, and a half-drop pattern (where the repeat is offset on alternate drops) typically needs around 15% more. The final area is divided by 5m² per roll and rounded up to a whole roll, always add one spare roll from the same batch, since dye lots can vary slightly between production runs.
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