Wallpaper Roll Estimator

Calculate exactly how many wallpaper rolls you need for your project

Project Options

Wall Dimensions

Wallpaper Details
inches
Standard widths: 20.5" or 27"
feet
Standard lengths: 33' or 27'
inches
For patterned wallpaper only
%
Extra for cutting/mistakes
Results
No calculations yet

Enter your wall dimensions and wallpaper details, then click "Calculate"

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Wallpaper Calculator Guide

Measure the height and width of each wall you plan to wallpaper. For multiple walls, add each one separately.

Height: Measure from the floor to the ceiling (or to where the wallpaper will end).

Width: Measure the full length of each wall, including doors and windows (we'll account for these later).

Wallpaper rolls come in different sizes. The most common are:

  • American standard: 20.5 inches wide × 33 feet long
  • European standard: 21 inches wide × 11 yards long
  • Double rolls: Twice the length of standard rolls

Check your wallpaper specifications as sizes can vary by manufacturer.

Patterned wallpaper requires matching the design between strips, which creates waste.

Pattern repeat: The vertical distance before the pattern repeats itself.

For example, if a pattern repeats every 12 inches, you'll need to cut each strip longer to match the pattern with the previous strip.

Solid color or random-match patterns typically have no repeat (enter 0).