Wallpaper Calculator

Calculate how many rolls of wallpaper you need for your room.

Calculate how many rolls of wallpaper you need

Room Length

Room Width

Wall Height

Doors

Windows

Roll Width

Roll Length

Pattern Repeat

Formula

Rolls = Usable Area ÷ Coverage per Roll

Accounts for doors, windows, and pattern matching waste

How to Use This Calculator

1
Measure your room
Measure the length, width, and height of your room.
2
Count openings
Count the number of doors and windows to subtract from the total.
3
Enter roll specs
Enter your wallpaper roll width, length, and pattern repeat if applicable.

American rolls are typically 27" wide × 27 feet long. European rolls are often 21" wide × 33 feet long.

Pattern repeat is the distance between where the pattern starts again. Larger repeats mean more waste.

Buy 1-2 extra rolls for mistakes and future repairs. More for large pattern repeats.