Wallpaper Calculator

Rolls of wallpaper for a room — accounts for repeat, windows, and doors.

Calculator Construction Updated Apr 19, 2026

Perimeter (ft) Height (ft)

Doors Windows

Roll coverage (ft²) Pattern repeat (in)

Notes

Pattern repeat

Adds ~15% waste

Round up

Always round up — can\'t buy partial roll

Last updated: April 19, 2026