How many wallpaper panels for a 4 m wall?
4 panels on a 106.7 cm roll
The short answer
A 4 m wide, 2.7 m tall wall printed on a 106.7 cm (42 inch) roll needs 4 panels, with 5 cm extra on each side and a 2 cm overlap between panels. Each panel is 106.7 cm wide and 280 cm long. At 150 pixels per inch that is about 6,300 × 16,535 pixels per panel.
How it is worked out
- (400 + 10 − 2) ÷ (106.7 − 2)
- = 3.9 → 4 panels
- Panel length: 270 + 10 = 280 cm
Other sizes and options
| Roll width | Panels needed |
|---|---|
| 91.4 cm roll | 5 |
| 106.7 cm roll | 4 |
| 137.2 cm roll | 4 |
| 152.4 cm roll | 3 |
What can change the amount?
Ask the print shop for their roll width and preferred overlap before sending artwork. A small web image stretched over a whole wall prints blurry, so check the resolution first. Store-bought rolls are counted differently, by strips per roll; the wallpaper guide shows how.
Worked out with common rules of thumb and code minimums, for planning. Check the product label, the maker's instructions and your local building code before you buy or build. More detail in the Wallpaper guide.