How it works
Estimate rolls from full-height strips. Include trimming in height; pattern repeats and openings require your own allowance.
strips = ceil(wall width/roll width); rolls = ceil(strips/floor(roll length/height))
Worked example
Show example inputs and result
Total wall width: 10 · Wall height including trim: 2.6 · Roll width: 0.53 · Roll length: 10.
- Rolls
- 7
- Strips
- 19
Questions and answers
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy