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Free wallpaper calculator

Estimate how many full-height wallpaper strips and rolls your walls will need.

Wallpaper / wall covering calculator

Estimate full-height strips and rolls for a straight-match covering. Verify pattern repeats, usable roll length, and the manufacturer's instructions before purchasing.

Enter your measurements and select Calculate rolls.

How to use this calculator

Measure total wall length and wall height. Enter the manufacturer's roll dimensions, any pattern repeat, trimming allowance and extra-roll allowance.

Important estimating assumptions

This straight-match estimate assumes no openings deducted. Half-drop patterns, damaged roll ends and manufacturer guidance may require more material.

Why does wallpaper pattern repeat affect roll count?

A repeating design can require longer cuts to align adjacent strips. That reduces the number of full-height strips obtainable from each roll.

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