How to use Wallpaper Rolls & Repeat
Count straight-match wallpaper strips, repeats, usable cuts and full rolls.
- Read the repeat, width and usable bolt length on the product label.
- Add top and bottom trim before rounding a cut up to the repeat.
- Count complete strips per bolt; a short offcut may not make another full strip.
Formula & calculation method
Cut length = wall height + total trim, rounded up to a whole vertical repeat when repeat is nonzero. Strips per roll = floor(roll length ÷ cut length). Rolls = ceil((ceil(total wall width ÷ roll width) + extra strips) ÷ strips per roll).
Input reference · 7 fields
These labels describe the calculation’s base units. Supported measurements can switch through the header’s region settings; follow the current workspace labels. Prefilled values are examples.
- Total wall width (m)
- Add the widths of walls to cover; use the same finished height.
- Finished wall height (m)
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Roll width (m)
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Roll length (m)
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Vertical pattern repeat (cm)
- Straight-match patterns only. Enter 0 for no repeat.
- Total top/bottom trim per strip (cm)
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
- Extra full strips
- Enter a plain number with a decimal point if needed. The workspace shows an illustrative value, not a recommendation.
A quick example
For 12 m width, 2.4 m height, 0.1 m trim and a 0.64 m repeat, each cut is 2.56 m. A 10.05 m roll gives three strips. At 0.53 m width plus one extra strip, 24 strips need eight rolls.
Assumptions, edge cases & limits
- Straight-match only; half-drop, multiple wall heights, awkward corners and batch variation need supplier advice. No doors or windows are subtracted. Enter the length of the actual bolt you purchase.
- The walls use one finished height. Enter repeat and trim in the units actually shown, and keep all lengths consistent.
Questions about Wallpaper Rolls & Repeat
Does this wallpaper calculator account for pattern repeat?
Yes, for straight-match patterns. Wall height plus trim is rounded up to a whole vertical repeat, then full strips per roll and whole rolls are calculated. Half-drop layouts need a separate cutting plan.
Should I subtract door and window areas from wallpaper?
This strip model uses total wall width and a common height rather than subtracting opening area. Openings do not necessarily save a full strip; verify the actual layout before reducing an order.
Are my files or inputs uploaded?
Calculation and file processing run in your browser without a processing upload. Downloads go to your device. Choosing a next-step transfer creates a temporary local copy for that workflow. Region preferences are stored separately from tool inputs. See our privacy details.
Can I use this tool for free?
Yes. No signup, subscription or payment is required to use the tool or download its output. File tools have device and size limits; a smaller batch may work better on a phone.
Method & references
Read the underlying method or measurement convention in context. These references do not imply affiliation or endorsement.
Thibaut: wallpaper roll and bolt conventions ↗Check the assumptions, measurement conventions and actual product or contract terms for your use case.A result or explanation needs correcting? Tell us the tool name and an example.