Wallpaper Roll
Estimate how many wallpaper rolls a room will need.
About Wallpaper Roll
Each roll yields a number of full wall-height strips, and dividing the total wall area by that usable area gives the rolls. Patterned paper can need noticeably more rolls than plain, so counting strips avoids buying yourself into a corner halfway through.
Formula
Wallpaper Roll
Strips per roll = roll length / (wall height + repeat); rolls = wall area / usable per roll
- pattern repeat
- Inches a pattern shifts between strips, increasing waste
Worked example
With the default values below, Wallpaper Roll returns Wall Area of 512.0. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Wall lengthminimum 1 ft
- 20 ft
- Wall widthminimum 1 ft
- 12 ft
- Wall heightminimum 1 ft
- 8 ft
- Roll widthminimum 1 in
- 20.5 in
- Roll lengthminimum 1 ft
- 33 ft
- Pattern repeatminimum 0 in
- 0 in
Results
- Wall Area
- 512.0 sq ft
- Strips per Roll
- 4
- Usable per Roll
- 6.8 sq ft
- Rolls Needed
- 75
Step by step
- 1Values used
- 2Wallpaper Roll
- 3Wall Area= 512.0 sq ft
- 4Strips per Roll= 4
- 5Usable per Roll= 6.8 sq ft
- 6Rolls Needed= 75
Assumptions and limits
- The result is derived only from the 6 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Wallpaper Roll calculated?
Strips per roll = roll length / (wall height + repeat); rolls = wall area / usable per roll Each roll yields a number of full wall-height strips, and dividing the total wall area by that usable area gives the rolls.
Why does Wallpaper Roll matter?
Patterned paper can need noticeably more rolls than plain, so counting strips avoids buying yourself into a corner halfway through.
What values do I need to enter?
This calculator takes 6 inputs: Wall length, Wall width, Wall height, Roll width, Roll length, Pattern repeat. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.