Calculate how many rolls of wallpaper you need for any room. Supports single, double, and European roll sizes with pattern repeat adjustments.
3
Roll Types
6
Pattern Repeats
2
Systems
100%
Free to Use
Enter Room Details
Your Results
Ready to Calculate
Enter your room dimensions and click Calculate to see wallpaper estimates.
Rolls Needed
0 rolls
Total Wall Area
0 sq ft
Doors & windows subtracted
Pattern Repeat Waste
0%
No pattern repeat
Linear Feet
0 ft
Wall perimeter
Estimated Material Cost
—
Enter price to calculate
Calculation Summary
Room Size0 × 0 × 0
Roll SizeSingle Roll
Pattern Repeat0 in
Rolls Required0
Total Cost—
Frequently Asked Questions
Measure your room's perimeter and height. Divide the wall height by the roll length to determine drops per roll. Divide the total number of drops needed by drops per roll. Account for pattern repeat waste by adding the pattern repeat to each drop length.
Single rolls (21" × 16.5 ft) cover about 29 sq ft. Double rolls (21" × 33 ft) are twice the length at about 58 sq ft. European rolls (20.5" × 33 ft) are slightly narrower. Double rolls are the most common and economical for most projects.
Pattern repeat adds waste because each strip must align with the next. A larger pattern repeat means more waste. For example, a 24-inch pattern repeat can add up to 25% waste. This calculator adjusts the effective roll length based on your pattern repeat size.
Yes, subtract the area of doors (21 sq ft each) and windows (15 sq ft each) from the total wall area. This calculator automatically subtracts these openings, but it also adds a small waste buffer to ensure you have enough wallpaper for matching patterns and trimming.
Wallpaper costs vary widely from $20 to $200+ per roll depending on the brand, material, and design. Standard vinyl or paper wallpapers typically cost $30–$60 per double roll. Designer or textured wallpapers can cost significantly more.