Wallpaper Calculator | Roll Count for Walls
Estimate wallpaper roll count from wall perimeter, wall height, roll width, roll length, and waste percentage.
Wallpaper Roll Estimate
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Estimate Wallpaper Rolls Needed
Enter wall perimeter, wall height, roll width, roll length, and waste percentage to estimate wall area and number of rolls.
Pattern Repeat Can Increase Waste
Large repeats, matching seams, doors, windows, mistakes, and future repairs can change roll count. Buy extra when the pattern is hard to match.
About This Tool
Wallpaper Calculator estimates the number of wallpaper rolls needed to paper a room based on wall dimensions, roll size, and pattern repeat length. It prevents ordering too few rolls mid-job when the batch may no longer match.
When to Use It
Use this before ordering wallpaper to ensure you buy enough from the same batch number, when calculating material costs for a decorating quote, or when estimating how many rolls a room with doors and windows actually needs.
How to Use
- Enter the room perimeter or individual wall dimensions.
- Subtract window and door widths.
- Enter the roll width, length, and pattern repeat.
- Click Calculate to see the number of rolls needed.
Frequently Asked Questions
Why does pattern repeat affect the number of rolls?
Pattern repeat means some of each roll is wasted matching the pattern across strips. A large pattern repeat increases waste and requires more rolls.
Should I round up when ordering wallpaper?
Yes. Always round up to the next full roll. Order one extra roll for long rooms or complex layouts with many corners or obstacles.
What is a standard wallpaper roll size?
Most UK wallpaper rolls are 10 metres long and 52 cm wide. European rolls are often 10.05 metres by 53 cm. Check the specification before calculating.