Wallpaper Calculator

Your details

Room mode finds the perimeter from a rectangular floor. Perimeter mode lets you add up the walls yourself.
m
m
Floor (or skirting) to ceiling, measured at the tallest point.
m
A standard European roll is about 10 m long. A US double roll is roughly 11 yd (33 ft).
m
European rolls are usually 53 cm wide. US rolls are commonly 27 in (about 68 cm).
cm
The vertical distance before the design repeats. Use 0 for plain or random-match papers. Find it on the roll label.
cm
On top of the pattern-repeat loss: covers trimming, miscuts and offcuts. 10% is typical, more for tricky walls.
%
Each standard door (about 2 m x 0.8 m) is deducted from the wall area.
Only deduct large openings (about 1.5 m x 1.2 m). Leave small windows in, the offcuts are wasted anyway.
Currency
Rolls to buy
8
Full-height strips (drops) needed32
Strips you get per roll4
Cut length per strip (with repeat)2.4 m
Net wall area36.8 m²

Buy 8 rolls of wallpaper for this room.

  • You need 32 full-height strips, and each roll yields 4 strips at this cut length, so 8 rolls covers the room.
  • Each strip is cut to 2.4 m so the pattern lines up; the net wall area is 36.8 m² after deducting openings.
  • Buy every roll from the same batch (check the batch or shade number) so the colour matches across walls, and keep the offcuts for repairs.

Next stepA bigger pattern repeat wastes more at the top of every drop, so confirm the repeat on the roll label, and order one spare roll if the design is hard to match.

 = Powered by OnlyCalculators