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Tool: Wallpaper Calculator — Calcolatore Online Gratuito | HomeCalcPro | Stampato il:
Wallpaper Calculator — Calcolatore Online Gratuito | HomeCalcPro
Calcoli precisi e istantanei con formule standard per Wallpaper Calculator.
Project & Material Dimensions
Estimated Material & Energy Output
Wallpaper Roll & Pattern Match Formula
Transparent mathematical methodology explained in plain English.
Net Wall Area = (Perimeter × Height) - Deductions | Double Rolls = (Net Area × 1.10) / Usable Sq Ft per RollCalculates wallpaper rolls where pattern repeat reduces usable square footage per roll (56 sq ft for plain, 48 sq ft for small repeat, 42 sq ft for large drop match).
Variables Explained:
- Room Perimeter (ft): Total linear length of all walls in room.
- Wall Height (ft): Floor to ceiling height.
- Pattern Repeat (Inches): 0" for random match, 1"–12" for small match, 13"–24" for large drop match.
48 ft Perimeter Room, 9 ft Ceiling, 40 sq ft Deductions, Plain Match (0" Repeat)
Calculating net square footage and double roll count.
- Gross Wall Area: 48 × 9 = 432 sq ft.
- Net Wall Area: 432 - 40 = 392 sq ft.
- Usable Sq Ft per Double Roll (Plain Match): ~56 sq ft.
- Double Rolls Needed (with 10% safety): (392 × 1.10) / 56 = 431.2 / 56 = 7.7 -> 8 Double Rolls.
Domande Frequenti (FAQ): Wallpaper Calculator
Click any question below to expand quick answers, formulas, and expert tips.
Why is wallpaper priced in single rolls but sold in double rolls?
Industry tradition prices wallpaper by the single roll (approx 28 sq ft), but European and American manufacturers package them in double rolls (approx 56 sq ft) to reduce scrap and cut waste.
What is a drop match in wallpaper?
A drop match wallpaper has a pattern that aligns diagonally across adjacent strips, requiring extra roll length per strip to line up the recurring design motif.