Matched drops
Each wall-height drop includes trim, then rounds up to a whole vertical repeat. This avoids undercounting patterned paper.
Wallpaper / roll estimate
Wallpaper calculator
Estimate full drops and rolls from the dimensions printed on your roll, including trim and vertical pattern repeat.
Repeat-aware, not just area divided by area.
Industry guidance
The Wallcoverings Association recommends allowing for pattern match, trim, and consistent run numbers. Source
Before you order
Read the roll label twice.
Enter the packaged roll size
Single-roll and double-roll naming varies. Use the physical width and length printed on the product label.
Use the vertical repeat
A straight or drop match can consume extra length even when the total square footage appears sufficient.
Keep one run number
Order the project together and confirm every roll has the same dye-lot or run number before cutting.