Calculate wallpaper rolls needed based on room dimensions
Our wallpaper calculator helps you determine how many rolls of wallpaper you need based on your room dimensions and roll specifications. The calculator accounts for standard waste factors to ensure you have enough material for pattern matching and cuts around doors and windows.
Wallpaper rolls come in various widths (most commonly 21" and 27") and lengths (typically 27-33 feet). The calculator uses your specific roll dimensions to provide accurate estimates. A 15% waste factor is included for pattern matching and trimming around obstacles.
This tool is perfect for DIY decorators planning an accent wall or full room wallpapering, interior designers preparing material lists, and anyone asking "how many rolls of wallpaper do I need?" Remember that patterns with large repeats may require additional material.
Follow these steps to calculate your wallpaper needs: