Wallpaper Calculator
Find how many rolls of wallpaper you need.
Result
Results are estimates for general information only and are not professional advice.
How many rolls?
Each roll of wallpaper covers an area equal to its length times its width. This calculator divides your wall area by the coverage of one roll and adds 10% for pattern matching and trimming, giving the number of rolls to buy.
Frequently Asked Questions
What is the Wallpaper Calculator?
Find how many rolls of wallpaper you need. It runs instantly in your browser and is completely free to use.
What do I need to enter to use the Wallpaper Calculator?
The Wallpaper Calculator asks for the following values (3): Wall area (m²), Roll length (m), Roll width (cm). Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.
How accurate is the Wallpaper Calculator?
The Wallpaper Calculator uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.
Is the Wallpaper Calculator free, and do I need an account?
Yes. The Wallpaper Calculator — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.