Half-Drop Wallpaper Cut calculator.
Compare alternating wallpaper drop phases with a half-repeat offset and count fixed-length roll pairs.
Your inputs
Measurement schematic, not to scale. Use your own dimensions and product specification.
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.
Uses a conservative paired-roll layout with alternating phase cuts. It does not optimise arbitrary remnants or cut-outs around openings.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Required drop height with trimming
- 2.5 m
- Pattern repeat
- 0.5 m
- Roll length
- 10 m
- Required full-width drops
- 7
Rolls for paired half-drop cuts: 4 rolls
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.
Uses a conservative paired-roll layout with alternating phase cuts. It does not optimise arbitrary remnants or cut-outs around openings.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-04. Calculation and review policy.