Calculadora de Rollos de Papel Tapiz Gratis
Calcula cuántos rollos de papel tapiz necesitas para empapelar una habitación considerando repetición de patrón.
Rolls Needed
8 rolls
Rolls Needed vs Room Perimeter
Fórmula
## How to Calculate Wallpaper Rolls ### Formula **Net Wall Area = (Perimeter x Height) - Openings Area** **Usable Coverage per Roll = Roll Length x (Roll Width / 12) x Efficiency** **Rolls Needed = ceil(Net Wall Area / Usable Coverage per Roll)** Efficiency is typically 90% for solid or random patterns and 80% for patterns with a repeating motif. The repeat causes waste because each strip must be aligned to the pattern. ### Standard Roll Sizes American single rolls: 21 in wide x 33 ft long (about 57 sq ft gross). European rolls: 21 in wide x 33 ft long. Double rolls are twice the length.
Ejemplo Resuelto
A room with 52 ft perimeter, 8 ft ceilings, 40 sq ft of openings, standard 21-inch rolls at 33 ft, no pattern repeat.
- 01Gross wall area = 52 x 8 = 416 sq ft
- 02Net area = 416 - 40 = 376 sq ft
- 03Coverage per roll = 33 x (21/12) x 0.90 = 51.97 sq ft
- 04Rolls needed = ceil(376 / 51.97) = 8 rolls