Wallpaper Calculator

A wallpaper calculator determines how many rolls of wallpaper are required to cover a room's walls, accounting for door and window spaces and the pattern repeat that requires extra paper for alignment.

PrimeCalcPro provides professional-grade tools trusted by businesses and academics.

1. 1Calculate total wall area: perimeter × wall height
2. 2Subtract door and window areas (approximately 2m² per door, 1.5m² per average window)
3. 3Add pattern repeat waste: if repeat is 64cm and roll is 10m, you lose ~6% per drop
4. 4Divide adjusted area by usable area per roll (roll width × usable length)