Wallpaper Calculator
Calculate rolls of wallpaper needed for your room. Accounts for pattern repeat and subtracts doors/windows.
Room Dimensions
feet
Add all wall lengths together, or enter each wall below
feet
Subtract Openings
Wallpaper Specifications
$
Wall Coverage
Gross Wall Area
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Net Area (minus openings)
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Adjusted for Pattern Waste
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Materials Needed
Single Rolls
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Double Rolls (if sold that way)
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Wallpaper Tips
- Pattern repeat adds significant waste - larger patterns need more rolls
- US rolls are often sold as "double rolls" (54 sq ft usable)
- Buy from same batch - color can vary between production runs
- Keep 1 extra roll for future repairs
- Prep walls properly - smooth, primed walls ensure best adhesion
- Measure twice - returns may not be accepted on cut rolls
- Account for waste: 15% for no pattern, up to 30% for large patterns
Ad Space - 728x90
Standard Roll Sizes
| Type | Width | Length | Coverage |
|---|---|---|---|
| US Single Roll | 27" (68.5cm) | 27 ft (8.2m) | ~60 sq ft (5.6m²) |
| US Double Roll | 27" (68.5cm) | 54 ft (16.5m) | ~120 sq ft (11.1m²) |
| Euro Standard | 20.5" (52cm) | 33 ft (10m) | ~56 sq ft (5.2m²) |
| Commercial | 54" (137cm) | 30 yd (27.4m) | ~135 sq ft (12.5m²) |
Note: Usable coverage is typically 85-90% of total due to trimming and matching.