Wallpaper Rolls Calculator
Calculate how many rolls you need
About the Calculator
Wallpaper projects go smoother when you know exactly how many rolls to buy. This calculator estimates rolls based on wall size and roll coverage, then adds extra for pattern matching and waste. Use it before you shop so you avoid running short or overbuying. It is helpful for a single accent wall or an entire room, and it works best when you measure carefully. Enter your wall width and height, check the roll coverage on the label, and get a clear roll count. It is a quick way to plan the project and budget with confidence. Use the Wallpaper Rolls Calculator to get a clear result you can act on right away.
How to Calculate Manually
- 1Enter the square footage coverage of each wallpaper roll (usually 25-56 sq ft)
- 2Input the wall length in feet and inches
- 3Input the wall height in feet and inches
- 4The calculator will show total rolls needed including waste allowance
- 5For multiple walls, calculate each wall separately and add the results
Typical: 25-28 sq ft (single), 50-56 sq ft (double)
Feet
Inches
Feet
Inches
Rolls Needed
4
Including 15% waste allowance for pattern matching
💡 Pro Tip
Always buy one extra roll for future repairs and ensure all rolls are from the same dye lot for color consistency.
The Formula
Examples
Wall: 12 ft × 8 ft = 96 sq ft, Roll coverage: 28 sq ft
4 rolls needed (with waste)
Wall: 15 ft 6 in × 9 ft = 139.5 sq ft, Roll coverage: 56 sq ft
3 rolls needed (with waste)
Should I round up?
Always round up to ensure you have enough wallpaper
Tips & Strategies
Most single rolls cover 25-28 sq ft. double rolls cover 50-56 sq ft
Add 10% waste for solid patterns. 15% for patterns requiring matching
Quick tip. Measure each wall separately and don't subtract windows/doors for best accuracy
Quick tip. Buy all rolls from the same batch to ensure color consistency
Order an extra roll for future repairs. dye lots can vary between batches
Things Worth Knowing
- •Wallpaper has been used since ancient China around 200 BCE
- •The first machine-printed wallpaper was created in 1785
- •Pattern repeat size affects waste - larger repeats require more material
- •Professional installers typically add 15-20% for pattern matching and trimming