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Wallpaper Calculator

Calculate wallpaper rolls needed for any room. Accounts for pattern repeats, doors, and windows.

Room Details

m

Or enter length + width below

m
cm

Distance in cm between repeating elements of the pattern

cm

Standard wallpaper roll width is 53–70 cm

m

Standard wallpaper roll length is 10 m

Pro Tips from the Workshop

  • •Buy all rolls from same batch - dye lots vary
  • •Large repeats (24+) waste more material but create dramatic effect
  • •Plan to start pattern matching at most visible wall
  • •Prepasted wallpaper is easier for DIY, unpasted more forgiving

Ready to Calculate

Enter your room dimensions to get wallpaper estimates

Wallpaper Estimation

Wallpaper calculation accounts for pattern matching and waste:

  1. Calculate total wall area (perimeter Ă— height)
  2. Subtract doors and windows
  3. Account for pattern repeat waste (larger repeats = more waste)
  4. Divide by usable coverage per roll (accounting for pattern match)
  5. Add pattern waste and round up to nearest full roll

Pattern Matching: Larger pattern repeats increase waste significantly