Should I Subtract Doors And Windows?

Usually no — normal openings get absorbed by trimming and pattern matching. Subtract only very large glazed walls.

Why Round Up To Pattern Repeats?

Each strip must start at the same point in the motif to line up with its neighbor, so every strip is cut to a whole number of repeats.

Wallpaper Calculator

How many rolls to buy — strip-based math with roll size, pattern repeat and a waste allowance, in feet or meters.

Walls To PaperWall-by-wall strip math, the way installers cut a roll.

Wall 1WidthftHeightft

Wall 2WidthftHeightft

The Paper

Roll WidthinRoll LengthftPattern Repeatin

Openings & Allowances

DoorsWindowsWaste Allowance%Price Per Roll$

Openings use the installer shortcut — a door saves about half a strip and a window a quarter — and half-drop matches add 50% to the effective repeat. Buy every roll from one batch number: dye lots vary between print runs.

Shopping List

Rolls To Buy

Total Strips

2 walls

Wall Area208 ft²

Paste (1 Tub / 4 Rolls)2 tubs

Pattern repeats round every strip up to a whole motif so neighbors line up.

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What Is the Wallpaper Calculator?

The Wallpaper Calculator estimates rolls the way installers cut them: it works out the strip length your wall height needs (rounded up to full pattern repeats), how many strips a roll yields, how many strips your walls need, and adds a waste allowance. It supports US (feet/inches) and metric (meters/centimeters) inputs.

How It Works

Add up the width of every wall you're papering, enter the wall height, then the roll's width and length from the label plus the pattern repeat. Adjust the waste allowance for tricky rooms.

When to Use It

Use it before ordering wallpaper so you buy enough from a single batch — running short means a second dye lot that may not match.

Frequently Asked Questions

Should I Subtract Doors And Windows?: Usually no — normal openings get absorbed by trimming and pattern matching. Subtract only very large glazed walls.
Why Round Up To Pattern Repeats?: Each strip must start at the same point in the motif to line up with its neighbor, so every strip is cut to a whole number of repeats.

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