Free wallpaper calculator to estimate the number of rolls needed for your room. Accounts for doors, windows, and pattern repeat for accurate results.
Leave 0 if no pattern or random pattern
You might also find these calculators useful
Planning to wallpaper a room? Our free wallpaper calculator helps you determine exactly how many rolls you need. Simply enter your room dimensions, wallpaper specifications, and the calculator does the rest—accounting for doors, windows, and pattern repeats to minimize waste and save money.
A wallpaper calculator estimates the number of wallpaper rolls needed to cover the walls of a room. It takes into account room dimensions, openings (doors and windows), roll sizes, and pattern repeat to give you an accurate estimate. Pattern repeat is especially important—it determines how much extra wallpaper you'll need to match patterns between strips.
Wallpaper Formula
Rolls = ⌈Total Strips ÷ Strips per Roll⌉Get precise roll counts that account for pattern repeat and waste.
Avoid over-ordering or running short mid-project.
Supports both imperial and metric measurements.
See total cost based on price per roll.
Calculate wallpaper for accent walls or full room coverage.
Estimate rolls needed for larger spaces with multiple windows.
Get cost estimates before purchasing to stay within budget.
Plan your wallpaper project with confidence.
Pattern repeat is the vertical distance between identical elements in a wallpaper design. When hanging wallpaper with patterns, you need to align strips so the pattern matches, which creates waste. Higher pattern repeats (like 24 inches) mean more waste than smaller ones (like 6 inches) or random patterns.