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How to Calculate Wallpaper Requirements

Estimating the amount of wallpaper needed involves understanding your wall dimensions and accounting for patterns, repeats, and cuts. Use the following formula:

Wallpaper Rolls Required = (Total Wall Area ÷ Roll Coverage Area)

Where:

  • Total Wall Area = Wall Height × Wall Width (for each wall).
  • Roll Coverage Area = Length of the roll × Width of the roll.

Example Calculation

You want to wallpaper a feature wall measuring 12 ft in width and 8 ft in height. The wallpaper roll dimensions are 33 ft (length) × 2 ft (width).

  1. Calculate the total wall area:
    Wall Area = 12 ft × 8 ft = 96 sq ft
  2. Calculate roll coverage area:
    Roll Coverage Area = 33 ft × 2 ft = 66 sq ft
  3. Determine the number of rolls:
    Rolls Required = 96 ÷ 66 = 1.46 (Round up to 2 rolls).

You’ll need 2 rolls of wallpaper.