How many rolls of wallpaper do I need for a standard room?

A typical room (4 m x 3.5 m, 2.5 m high) with one door and one window needs about 8 to 11 rolls of standard Euro wallpaper (10.05 m x 0.53 m). Plain wallpaper without a pattern sits at the lower end. A large pattern repeat (53 cm or more) pushes you toward the higher end because each strip wastes more material on alignment.

What is a wallpaper pattern repeat?

The pattern repeat is the vertical distance between two identical points in the design. For a straight match, every strip starts at the same point in the pattern. For a half-drop match, alternating strips shift down by half the repeat, which creates a diagonal flow. Common repeat distances range from 26 cm to 64 cm. A larger repeat means more waste per strip.

How much extra wallpaper should I buy?

10% extra is the standard recommendation. This covers trimming at the top and bottom, cutting around light switches, and the occasional mistake. If you're a first-timer or working with a complex pattern, consider 15%. Always keep at least one spare roll for future repairs, and remember that reordering later may give you a different dye lot.

What is a standard wallpaper roll size?

The European standard (Euro roll) is 10.05 m long and 0.53 m wide, giving roughly 5.3 m2 of coverage before trimming. This is the default across the UK, Germany, the Netherlands, Belgium, and France. Some premium brands use wider rolls (0.70 m), which cover more area per roll but need more careful handling.

Does half-drop matching use more wallpaper?

Yes. With a half-drop pattern, every second strip needs an extra half-repeat of material to align the offset design. For a 53 cm repeat, that means roughly 26 cm of additional waste on every other strip. The practical effect depends on your wall height and the repeat distance, but expect 5% to 15% more rolls compared to a straight match with the same repeat.

Wallpaper Calculator

Find out exactly how many rolls to buy. Pattern repeat and waste for cuts are already factored in.

What are you wallpapering?

Dimensions

Room length

Room width

wallpaper.wallHeight

wallpaper.patternMatch

Rolls to buy

11wallpaper.rolls

wallpaper.dropsNeeded: 29
Strip height (effective): 2.60 m
Strips per roll: 3
wallpaper.grossWallArea: 37.50 m²
wallpaper.openingsArea: 3.30 m²
Wall area (net): 34.20 m²
Pattern waste: 0.00%

Wallpaper Calculator

How wallpaper calculations work

How to measure your walls for wallpaper

Common wallpaper mistakes to avoid

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