How many rolls of wallpaper do I need?

Multiply room perimeter by wall height for wall area, then divide by the roll's usable coverage (about 90% of the printed coverage after pattern matching).

Should I buy extra wallpaper?

Yes — buy all rolls from the same batch and keep a spare for repairs, since dye lots vary between print runs.

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Wallpaper Calculator

Rolls of wallpaper for a room.

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Room perimeter (ft)Wall height (ft)Roll coverage (sq ft)

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How to use this calculator

Enter the room perimeter and wall height.
Enter the roll's coverage from the label.
See how many rolls to buy.

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Frequently asked questions

How many rolls of wallpaper do I need?: Multiply room perimeter by wall height for wall area, then divide by the roll's usable coverage (about 90% of the printed coverage after pattern matching).
Should I buy extra wallpaper?: Yes — buy all rolls from the same batch and keep a spare for repairs, since dye lots vary between print runs.