Wallpaper Rolls Calculator
Multiplies room perimeter by wall height and divides by the coverage of one roll, rounding up: 12 m by 2.6 m at 5.3 m² per roll needs 6.
Rolls
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How to estimate wallpaper rolls
The formula is rolls = (perimeter × height) / coverage_per_roll. A standard European roll is 10 m × 0.53 m = 5.3 m². Tack on 15–20% for losses, since cuts, end strips and the pattern repeat (drop) all eat into your material; patterned papers with a vertical repeat over 30 cm waste even more. An average 3 × 2.5 m bedroom (perimeter 12 m × height 2.6 m = 31 m²) lands around 8 rolls once you've got margin. Run the numbers on a 15 m² wall: 15 / 5.3 = 2.83, plus 20% gets you 4 rolls, and you always round up. As for roll types, you'll find traditional vinyl (water-based glue), non-woven (TNT, paste-the-wall, which goes up more easily), and peel & stick / removable papers (Tempaper) that work nicely for renters or an accent wall when you don't want to commit.
Applications
Interior decoration and Pinterest-inspired projects, full renovations, accent walls in bedrooms and living rooms, kids' rooms, and removable papers for rented apartments or a quick temporary makeover.
FAQ
Should I discount doors and windows? In small rooms, usually not. The extra material covers the cutting losses you get around openings anyway. Only bother discounting in large rooms with lots of openings.
What is pattern repeat (drop)? It's the vertical distance after which the print starts over. A bigger drop means more waste, so add 25–30% once the repeat goes above 50 cm.
Removable or traditional? Removable peel & stick suits renters and quick changes, though you pay more per m². Traditional vinyl with glue lasts 10+ years and comes out cheaper when the install is meant to stay.
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The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.