Wallpaper Calculator
Calculates the number of wallpaper rolls and strips needed, accounting for pattern repeat and wall size.
Enter Values
How to use this calculator
- Enter the total wall width (perimeter), wall height, roll length/width and pattern repeat.
- Read the rolls required.
How it works
Usable strips per roll = roll length ÷ (height + pattern repeat); strips needed = perimeter ÷ roll width; rolls = strips ÷ strips-per-roll.
Worked example
16 m perimeter, 2.4 m high, 10 m roll. A few rolls depending on the pattern repeat — buy one spare.
Tips
- Runs entirely in your browser. Your inputs are not saved or transmitted.
Frequently asked questions
What is pattern repeat?
The vertical distance before a pattern repeats; bigger repeats waste more paper per drop.
Privacy?
Runs entirely in your browser. Your inputs are not saved or transmitted.
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Cite this tool
Zerdly. (2026). Wallpaper Calculator. Retrieved from https://www.zerdly.com/tools/wallpaper-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.