Wallpaper Calculator

ft
ft
ft

Each subtracts 20 sq ft.

Each subtracts 15 sq ft.

in
ft

33 ft is a typical US double roll.

in
$

Rolls needed

7 rolls

Net wall area
349 sq ft
Full-height strips per roll
4
Usable area per roll
54.7 sq ft
Strips around the room (no deductions)
29
Wallpaper cost
$420

Trim and pattern-match waste is built in by counting only full strips per roll. Buy one extra roll from the same batch.

Open the full wallpaper calculator with the formula and FAQs at Calcs for Life