Measure Wallpaper Footage Calculator
Estimate how much wallpaper you need from room size, openings, and roll coverage. Allow extra square footage for waste (often about 5%); adjust the waste percentage to match your project.
Total square feet (with waste)
0
Wallpaper rolls required
0
Gross wall area
0 sq ft
Subtractions (openings + other)
0 sq ft
Net wall area
0 sq ft
Waste allowance
0 sq ft
Net wall area vs waste for cutting and pattern match.
How to Use This Calculator
- Measure or estimate the room perimeter (all walls) and wall height.
- Under Subtractions, count doors and windows; add any other square feet to exclude (e.g. built-ins).
- Enter usable square feet per roll from the wallpaper packaging and set waste allowance (5% is a common starting point).
- Click Calculate for total square footage to plan for, roll count, and the breakdown chart.
Frequently Asked Questions
Why is my roll count different from the store calculator?
Pattern repeat, strip width, and installer practice change how many rolls you need. This tool uses total area and a simple waste percent only.
Are door and window sizes exact?
No. They are typical planning allowances. For precision, measure each opening and add those square footages under Other subtractions instead.
