Wallpaper rolls from usable coverage

How to use this calculator

1. Enter wall area after openings (m²). Use the unit shown beside the field.
2. Enter usable coverage per roll (m²). Use the unit shown beside the field.
3. Select Calculate and review the result. Select Reset to restore the example inputs.

How the calculation works

ceil(Wall area after openings (m²)/Usable coverage per roll (m²))

Worked example

Wall area after openings (m²) = 40; Usable coverage per roll (m²) = 5. Result: 8 rolls.

Understand your result

Estimate whole rolls using coverage adjusted by you for pattern matching. The result is expressed in rolls.

Assumptions and limitations

Wall height and pattern repeat may require a strip-based estimate instead. Results are rounded for display.

Questions about this tool