Calculators

Wallpaper Estimator

Rolls of wallpaper for a room.

Total wall width / perimeter (m)Wall height (m)

Roll width (cm)Roll length (m)Pattern repeat (cm)

Waste allowance (%)

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Strip length

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Strips per roll

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Strips needed

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Rolls needed

This free wallpaper estimator tells you how many rolls to buy for a room. Enter the total width (or perimeter) of the walls and their height, then the roll's width and length. Each strip must be at least as long as the wall height plus the pattern repeat, so patterned papers use more. The estimator counts how many full strips you can cut from a roll, how many strips the walls need, and rounds up to whole rolls after adding a waste allowance. Everything is calculated in your browser.