Wallpaper roll quantity

How it works

Strip height = wall height + trim, rounded up to the next pattern repeat; strips needed = ceil(total wall width/roll width); whole strips per roll = floor(roll length/strip height).

Input definitions

Total wall width to cover (m): Enter the value in the labeled unit.
Wall height (m): Enter the value in the labeled unit.
Roll width (m): Enter the value in the labeled unit.
Roll length (m): Enter the value in the labeled unit.
Extra length per strip for trimming (m): Enter the value in the labeled unit.
Vertical pattern repeat (m, 0 = none): Enter the value in the labeled unit.

A worked example

Total wall width to cover (m): 4
Wall height (m): 2.5
Roll width (m): 0.5
Roll length (m): 10
Extra length per strip for trimming (m): 0.1
Vertical pattern repeat (m, 0 = none): 0

3.00

Assumptions & limits

Geometric/material planning only. Use consistent labeled units and verify manufacturer instructions and site measurements. Does not determine structural suitability, legal compliance or installation safety.

Sources & review

Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.

https://openstax.org/subjects/math ↗

Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.

Common questions

Should I order exactly the quantity shown?

Treat the result as a planning estimate. Check measurements, units, pack sizes, waste, openings and local requirements; the stated formula does not replace a project-specific design.

How does the Wallpaper roll quantity tool work?

Strip height = wall height + trim, rounded up to the next pattern repeat; strips needed = ceil(total wall width/roll width); whole strips per roll = floor(roll length/strip height).

What are the assumptions and limits of Wallpaper roll quantity?