Wallpaper Calculator
Rolls of wallpaper for any room
📚 Learn more — how it works, FAQ & guide Click to expand
Learn more — how it works, FAQ & guide
Click to expand
Wallpaper calculator
Calculate wallpaper rolls needed, factoring pattern repeat + openings.
How to use this tool
- 1
Measure room
Wall length + ceiling height.
- 2
Enter roll size
Width + length of roll from label.
- 3
See rolls needed
Including pattern repeat waste.
Frequently Asked Questions
Single vs double roll
American "single roll" is 27-28" wide × 13.5 ft long (~30 sq ft). European "roll" is 20.5" × 33 ft (~55 sq ft). Check label.
Pattern repeat wastage
Straight match: 10% waste. Drop match: 15-20%. Random match: 5%. Always order 1 extra roll.
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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.