Wallpaper Calculator
Calculate exactly how many wallpaper rolls you need. Accounts for pattern repeat, doors, windows, and standard or custom roll sizes.
10m long × 0.53m wide
Plain wallpaper or random pattern — no matching required.
No openings added. Add doors or windows to deduct from total area.
Enter your details and click Calculate to see your results.
How It Works
Enter Dimensions
Add your room measurements, ceiling height, and any doors or windows to deduct.
Choose Your Wallpaper
Select roll size (UK, US, or Euro standard) and enter pattern repeat details if applicable.
Get Your Results
See exactly how many rolls you need, waste percentage, and estimated cost. Export as PDF.
Why Use This Calculator
Pattern-Aware Accuracy
Accounts for straight match, offset match, and free match patterns so you never order too few or too many rolls.
Instant Results
No sign-ups, no waiting. Enter your numbers and get your answer in seconds.
Privacy First
All calculations happen in your browser. We never store your room measurements on any server.
PDF Export
Download a clean, print-friendly PDF of your results to take to the shop or share with your decorator.