Wallpaper Calculator
Calculate exactly how much wallpaper you need for your room with our comprehensive calculator. Determine rolls required based on room dimensions, wallpaper specifications, and pattern matching.
Step 1: Room Dimensions
Measuring Your Room
Measure the length, width, and height of your room in meters. For irregular rooms, measure each wall separately. Add 10% extra for pattern matching and wastage.
Step 2: Wallpaper Specifications
About Pattern Repeat
Pattern repeat is the vertical distance between where the pattern starts again. Larger repeats require more wallpaper as you need to match patterns, creating more waste.
Step 3: Doors & Windows (Optional)
Wallpaper Calculation Results
Total Wallpaper Required
Roll Type Comparison
| Roll Type | Dimensions | Rolls Needed | Total Cost |
|---|
Cost Breakdown
Wallpaper Calculation Formula
Wall Area = 2 × (Length + Width) × Height
Calculate total wall area, subtract doors/windows, add wastage percentage, then divide by roll coverage area to determine number of rolls needed.
Rolls Needed = (Wall Area – Door/Window Area) × (1 + Wastage%) / Roll Coverage
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