Wallpaper Calculator – Rolls Needed for Any Room
Calculate how many wallpaper rolls you need for any room based on room dimensions.
About This Calculator
Calculate how many wallpaper rolls you need for any room based on room dimensions. Use the calculator above for instant results.
Worked Examples
- Perimeter: 54ft | Area: 486 sq ft + 12% = 544 sq ft
- 544 / 56 = 10 rolls
Answer: 10 rolls
- Perimeter: 36ft | Area: 288 sq ft + 12% → 6 rolls
Answer: 6 rolls
- One wall: 108 sq ft + waste → 3 rolls
Answer: 3 rolls
Who Uses This Calculator?
Calculate wallpaper before buying.
Wallpaper installation estimates.
Plan wallpaper orders for projects.
Bid wallpaper installation jobs.
Common Mistakes to Avoid
❌ Pattern repeat adds waste
If wallpaper has a pattern repeat, add the repeat length × number of strips in waste. Large repeats (24in+) can add 20% more waste.
❌ Not buying from same batch
Wallpaper from different dye lots has slight color differences. Buy all rolls from the same batch number.
Frequently Asked Questions
Standard roll coverage?
US double roll: 56-57 sq ft. European single roll: ~28 sq ft. Always check the roll's coverage label.
Pattern repeat?
Match patterns add waste. A 24-inch repeat on 8ft walls means 12-18 inches wasted per strip. Increase order by 15-25%.
Wallpaper vs paint?
Wallpaper: more expensive, harder to install, harder to remove. Paint: easier, cheaper, more DIY-friendly. Wallpaper has longer lifespan when done well.