FREE · CALCULATORS & CONVERTERS
Wallpaper Calculator.
Estimate wallpaper drops and rolls from the room perimeter, roll size and pattern repeat.
Drops run the full wall height. The repeat rounds each drop up. The tool does not place a pattern across corners. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
- Perimeter used
- 14 m
- Drop length
- 2.5 m
- Drops
- 27
- Drops per roll
- 4
- Rolls
- 7
Drops are the usable perimeter divided by the roll width, rounded up. A pattern repeat rounds each drop up to a whole repeat. Rolls round up from the drops that fit in one roll length.
How to use Wallpaper Calculator
Enter the room, the total opening width to skip, and the roll. A repeat of zero is a plain paper.
How it works
Estimate wallpaper drops and rolls from the room perimeter, roll size and pattern repeat. Drops run the full wall height. The repeat rounds each drop up. The tool does not place a pattern across corners. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
Example
A 4 m × 3 m room, 2.5 m high, with 0.53 m × 10 m rolls.
Questions about Wallpaper Calculator
Is Wallpaper Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Drops run the full wall height. The repeat rounds each drop up. The tool does not place a pattern across corners. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.