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    Construction & Electrical

    Wallpaper Roll Quantity Calculator

    Find the number of wallpaper strips around a room and how many strips fit in each roll after top/bottom trimming and optional pattern repeat. Purchase whole rolls using a waste allowance.

    MAKE IT SIMPLE
    Assumptions and limitations

    Window/door openings are not automatically deducted because continuous pattern matching often still consumes strips.

    Result

    Worked examples

    Perimeter 20 m, height 2.4 m, roll 530 mm × 10 m

    Number of strips and full rolls estimated

    Find the number of wallpaper strips around a room and how many strips fit in each roll after top/bottom trimming and optional pattern repeat. Purchase whole rolls using a waste allowance.

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