Wallpaper Calculator (rolls needed)
Number of wallpaper rolls for a wall area, including wastage.
Result
Rolls needed
9
How it works
Rolls = area × (1 + wastage) ÷ roll area
Enter the wall area and the roll dimensions (a standard roll is 10 × 0.53 m). A 15% wastage covers pattern matching. The result is rounded up.
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Frequently asked questions
How big is a standard wallpaper roll?
Usually 10 m long and 0.53 m wide ≈ 5.3 m² per roll.
Why 15% wastage?
To align patterns and trim at the top and bottom of each strip.
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