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Wallpaper Calculator

Calculate how many rolls of wallpaper you need. Accounts for pattern repeat, roll dimensions, doors, and windows.

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Key FeaturesWallpaper Calculator

Pattern repeat allowance
Door and window deductions
Configurable roll width and length
Strip count and roll count

Why Use This ToolWallpaper Calculator

Free Online Wallpaper calculatorHow many rolls of wallpaper do i need — for EveryoneFast & Easy Wallpaper roll calculatorWallpaper pattern repeat calculator — 100% Free

Privacy First

All processing happens in your browser. Your data never leaves your device.

Lightning Fast

Get instant results with zero wait time. No server delays, no loading screens.

Works Everywhere

Use on any device — desktop, tablet, or phone. No downloads or plugins needed.

Frequently Asked QuestionsWallpaper Calculator

How many rolls of wallpaper?
Divide perimeter by roll width for strips needed. Divide roll length by (wall height + repeat) for strips per roll. Divide and round up.
What is a pattern repeat?
Vertical distance before the pattern repeats. More repeat = more waste per strip. Plain wallpaper has zero repeat.
Standard roll size?
US: 27" wide × 15 ft (single) or 33 ft (double). European: 20.5" × 33 ft.

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