How many rolls of wallpaper you need, with pattern repeat waste included.
How this works
Each drop is the wall height plus 10 cm for trimming, rounded up to a whole pattern repeat. We count how many drops fit on one roll, then how many drops go round the room (half a width is taken off per door and window). Always buy one spare roll from the same batch number.
Questions people ask
How do I use the Wallpaper Roll Calculator?
Fill in the fields, starting with “Room length”, “Room width” and “Wall height”, and change any other options that match your home. The answer, a drawing and practical tips update as you type, and the Copy link button saves your numbers in a link you can share.
Is the Wallpaper Roll Calculator free?
Yes. The Wallpaper Roll Calculator is free, with no sign-up, and works on phones, tablets and computers. The results are estimates to help you plan, so check with a qualified professional before structural, electrical, gas or plumbing work.