Wallpaper Calculator
Enter the width of the walls, the height, the size of the roll and the pattern repeat. You get the strips you can cut from each roll and the rolls to buy.
Rolls to buy
3
- Wall width to cover
- 3.5 m
- Strips needed
- 7
- Strips per roll
- 3
- Each strip
- 2.8 m
Buy every roll with the same batch number, and think about one spare.
How it works
- 1Strips needed = total wall width ÷ the roll width, rounded up.
- 2Each strip is the wall height plus the pattern repeat, plus a little for trimming top and bottom.
- 3Strips per roll = roll length ÷ strip length, rounded down. Leftover pieces are not counted.
- 4Rolls = strips needed ÷ strips per roll, rounded up. Doors and windows are not taken off, which leaves a sensible margin.
Questions
What is the pattern repeat?
It is the height at which the pattern starts again, printed on the label. A large repeat means more waste per strip, because each strip must line up with the one next to it. Plain papers have no repeat.
Should I buy an extra roll?
It is wise, because rolls from a later batch can differ in shade. Check that every roll has the same batch number before you start.
What size is a wallpaper roll?
Roll sizes vary by maker and range. The width and length are printed on the label. The calculator starts with a common size, so change both numbers to match your rolls.
Bigger job? Plan it step by step
Describe your build or renovation and get the steps in order, a checklist for each one and a rough timeline.
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