Roll calculation
How many rolls do I need for one room?
Measure the length and width of each room. That provides the scope of one room: 2 x length + 2 x width. If you know the ceiling height, you can calculate the amount needed looking at the table below. There a wastage of 10% is already taken into account. For larger patterns (wallpaper with offset match), you might expect even more waste.
Roll calculation of paper-backed wallpaper without offset in ft/sqft
Table 1. roll size: 1,74 ft x 32,97 ft = 57,37 sqft (-+3%)
| Perimeter of the room, ft | 20 | 33 | 39 | 46 | 52 | 59 | 66 | 72 | 79 | 85 | 92 | 98 |
| Room height 7-8 ft | 3 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| Room height 8-11 ft | 4 | 7 | 8 | 10 | 11 | 12 | 14 | 15 | 16 | 18 | 19 | 20 |
Table 2. roll size: 1,74 ft x 49,21 ft = 85,63 sqft (-+3%)
| Perimeter of the room, ft | 20 | 33 | 39 | 46 | 52 | 59 | 66 | 72 | 79 | 85 | 92 | 98 |
| Room height 7-8 ft | 2 | 4 | 4 | 5 | 6 | 7 | 7 | 8 | 9 | 10 | 10 | 10 |
| Room height 8-11 ft | 3 | 5 | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 13 | 14 |
Roll calculation of non-woven wallpaper without offset in ft/sqft
Table 1. roll size: 3,48 ft x 82,02 ft = 285,43 sqft (-+3%)
| Perimeter of the room, ft | 33 | 39 | 46-52 | 59 | 66-79 | 85-98 |
| Room height 7-8 ft | 1 | 2 | 2 | 3 | 3 | 4 |
| Room height 8-11 ft | 2 | 2 | 3 | 3 | 4 | 5 |
Table 2. roll size: 3,48 ft x 32,97 ft = 114,74 sqft (-+3%)
| Perimeter of the room, ft | 20 | 33 | 39 | 46 | 52 | 59 | 66 | 72 | 79 | 85 | 92 | 98 |
| Room height 7-8 ft | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 |
| Room height 8-11 ft | 2 | 4 | 4 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 10 |
Roll calculation of paper-backed wallpaper without offset in m/sqm
Table 1. roll size: 0,53 x 10,05m = 5,33 sqm (-+3%)
| Perimeter of the room, m | 5 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 |
| Room height 2,0 - 2,4 m | 3 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| Room height 2,4 - 3,3 m | 4 | 7 | 8 | 10 | 11 | 12 | 14 | 15 | 16 | 18 | 19 | 20 |
Table 2. roll size: 0,53 x 15,0m = 7,95 sqm (-+3%)
| Perimeter of the room, m | 6 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 |
| Room height 2,0 - 2,4 m | 2 | 4 | 4 | 5 | 6 | 7 | 7 | 8 | 9 | 10 | 10 | 10 |
| Room height 2,4 - 3,3 m | 3 | 5 | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 13 | 14 |
Roll calculation of non-woven wallpaperwithout offset in m/sqm
Table 1. roll size: 1,06 x 25m = 26,50 sqm (-+3%)
| Perimeter of the room, m | 10 | 12 | 14-16 | 18 | 20-24 | 26-30 |
| Room height 2,0 - 2,4 m | 1 | 2 | 2 | 3 | 3 | 4 |
| Room height 2,4 - 3,3 m | 2 | 2 | 3 | 3 | 4 | 5 |
Table 2. roll size: 1,06 x 10,05m = 10,65 sqm (-+3%)
| Perimeter of the room, m | 6 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 |
| Room height 2,0 - 2,4 m | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 |
| Room height 2,4 - 3,3 m | 2 | 4 | 4 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 10 |