Wall paint needed
Calculate how many litres of paint you need from wall area, number of coats and tin coverage (m²/L).
Open calculatorWallpaper rolls needed
Wallpaper is hung in whole strips, so the calculator counts strips rather than area: strips = perimeter ÷ roll width (rounded up), strip length = wall height plus trim allowance rounded up to whole pattern repeats, strips per roll = roll length ÷ strip length (rounded down), rolls = strips ÷ strips per roll (rounded up). A standard “euro” roll is 0.53 m wide and 10.05 m long.
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Distance after which the pattern repeats, printed on the roll label (e.g. 0.64 m). Each strip is cut to whole repeats.
m
Extra length for trimming the top and bottom of each strip, as a percentage of wall height — 10% at 2.7 m is about 27 cm.
%
Rolls to buy
12
Strips needed
34
Strips per roll
3
Length of one strip
2.97 m
Area including waste
53.5 m²
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For patterned wallpaper enter the repeat from the label — pattern matching is then counted in strips. Also check that all rolls share the same batch number.
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Educational estimate only. Not medical, tax, legal or financial advice.