Wallpaper Calculator
Planning to decorate? Determine the exact number of wallpaper rolls required for your project. Our calculator simplifies the process, ensuring you buy the right amount, saving time and money.
Room & Roll Details
Your Results
Total Rolls Needed
8
(includes 10% for waste)
Total Wall Area
30.56 m²
Usable Strips per Roll
4
Total Strips Needed
27
Understanding Your Wallpaper Needs
Calculating the right amount of wallpaper is crucial for a smooth decorating project. Our calculator takes the guesswork out of the equation. Here is a breakdown of the key factors involved in the calculation.
Measuring and Area
The foundation of the calculation is your room's total wall area, which is the perimeter multiplied by the height. We then subtract the area for standard doors and windows to get a more precise figure. For complex room shapes, you might consider using our square footage calculator for individual walls.
The Impact of Pattern Repeat
For patterned wallpaper, you cannot just use every piece of the roll. You must align the pattern on adjacent strips, which leads to offcuts and waste. A larger pattern repeat generally means more waste. Our calculation accounts for this by determining how many full-height, pattern-matched strips you can get from a single roll.
Waste and Contingency
Mistakes happen, and trimming around obstacles is inevitable. That is why we automatically add a 10% contingency to the final number of rolls. This industry-standard practice ensures you have enough paper to complete the job without a last-minute dash to the store. If you are also planning to paint some walls, check out our paint calculator for accurate paint estimates.
Frequently Asked Questions
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