Wallpaper Roll & Coverage Calculator
Determine the exact number of wallpaper rolls required for any room. Account for wall heights, door and window cutouts, and vertical pattern repeat drops to ensure seamless visual alignment.
How to Use Wallpaper Roll Calculator
Input Wall Dimensions
Enter the width and height of every wall to be wallpapered.
Specify Pattern Repeat
Input the pattern repeat distance in inches (found on the wallpaper label) or select zero for plain textures.
View Roll Counts
Get total single rolls and double rolls needed with standard 15% pattern matching waste.
About Wallpaper Roll Calculator
Wallpaper pattern repeats cause significant offcuts because each consecutive strip must be shifted vertically until the motif aligns with the adjacent strip. A 24-inch pattern repeat can easily generate 20% to 25% waste per wall.
Key Features
- Pattern repeat drop calculations (crucial for large damask, floral, or geometric patterns)
- Outputs both US Double Rolls (approx. 56-60 sq ft) and Euro Rolls (approx. 28-30 sq ft)
- Automatic door and window area deductions
- Visual pattern drop waste multiplier
- Immediate clear summary of strip count and roll count
Frequently Asked Questions
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