Calculate exact number of wallpaper rolls needed for any room accounting for doors, windows, and pattern repeat matching.
🎨 Wallpaper Calculator
Net Wall Area (sq ft)
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Standard Rolls (56 sqft)
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Rolls incl. 15% Waste
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💡 Pro Tip
Buy all wallpaper rolls from the same dye lot. Different lots can have subtle color variations that are very noticeable once installed.
Frequently Asked Questions
Q: How many rolls of wallpaper for a 12x12 room?
A 12x12 room with 8ft ceilings has ~384 sq ft of wall area. With standard 56 sq ft rolls (accounting for waste), you need about 8–10 rolls.
Q: Does wallpaper pattern repeat affect the roll count?
Yes. A 12-inch pattern repeat can waste up to 20% of each roll. Always add extra rolls for large pattern repeats.
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