Centred Wallpaper Strip Layout calculator.
Compare centring a wallpaper strip with centring a seam before cutting drops.
Your inputs
Use measurements from your plan and properties from your chosen product. Any prefilled values are illustrative.
A clear estimate starts here.
Enter your dimensions and product details to see the quantity and purchase breakdown.
Formula and assumptions
How this calculation works.
A centred strip needs an odd strip count and a centred seam needs an even count. This can change the number of rolls relative to starting at one edge.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Wall width
- 2 m
- Usable strip width
- 0.5 m
- Centre alignment
- Strip centre on wall centre
- Already specified aligned drop length
- 2.5 m
- Usable roll length
- 10 m
Whole rolls for centred layout: 2
Centres a strip or a seam geometrically. Pattern matching length must already be supplied; openings and leftover reuse are excluded.
Before you purchase
Use dimensions from your plan and properties from your chosen product. Any design spacing, section or fixing pattern must already be specified.
A centred strip needs an odd strip count and a centred seam needs an even count. This can change the number of rolls relative to starting at one edge.
Dimensions, quantities, prices, timing and product properties are supplied by you. This tool does not select construction specifications or assess structural, electrical or hydraulic suitability.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.