Decorating & interiors
Wallpaper Calculator
Rolls are decided by drops: how many full-height strips a roll yields once the pattern repeat has taken its cut.
Calculator
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How it works
Each drop is wall height plus one pattern repeat. A standard 10.05 m roll yields floor(10.05 / drop) drops; the walls need ceiling(total width / 53 cm) drops. Divide and round up - and buy all rolls from one batch.
Frequently asked questions
How many rolls for one wall?
A 4 m wide, 2.4 m high wall with no repeat: 8 drops needed, 4 drops per roll - 2 rolls. A 50 cm repeat pushes the drop to 2.9 m and cuts a roll to 3 drops.
What is a pattern repeat?
The vertical distance before the design repeats. Every drop must start at the same point in the pattern, so each drop wastes up to one repeat length.