Wallpaper Calculator

Calculate net wall area and the number of wallpaper rolls to buy.

Room perimeter (ft)

Wall height (ft)

Doors/windows (ft²)

Waste / pattern allowance (%)

Usable roll coverage (ft²)

Price per roll ($, optional)

—Net wall area

—Area with allowance

—Rolls

—Material cost

Actual usable coverage can be lower for large pattern repeats, matching, trimming, and roll format. Use the coverage printed for your product when available.

How to use this Wallpaper Calculator

Estimate wallpaper rolls from room perimeter, wall height, openings, roll coverage, and waste. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.