Wallpaper Calculator
Calculate wallpaper rolls needed for a room. Accounts for room dimensions, roll size, doors, windows, and includes 15% waste allowance for pattern matching.
How to Use Wallpaper Calculator
The Wallpaper Calculator determines how many rolls of wallpaper you need for a room. Enter your room length, width, and ceiling height, then specify the roll dimensions (standard US rolls are 20.5 inches wide by 33 feet long). Indicate the number of doors and windows to subtract their area. The calculator includes a 15% waste allowance for pattern matching and trimming. Get accurate roll counts to avoid over-ordering or running short mid-project.
Step-by-Step Instructions
- Enter room length, width, and ceiling height in feet
- Set roll width (inches) and roll length (feet)
- Enter number of doors and windows to subtract
- View the number of rolls needed with waste allowance
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