Free Wallpaper Calculator
Calculate Wallpaper Rolls Needed Instantly
Sum of all wall lengths
Standard: 8, 9, or 10 ft
📋 Wallpaper Coverage Guide
- Double Roll: Covers ~56 sq ft
- Single Roll: Covers ~28 sq ft
- Subtract 15 sq ft per window/door
❓ Wallpaper Calculator FAQ
How many rolls of wallpaper do I need?
Wall Area = Perimeter × Height. Rolls = Ceil(Area ÷ 56). Double roll = ~56 sq ft.
How much does a roll of wallpaper cover?
Double roll covers ~56-60 sq ft. Single roll: 28-30 sq ft.
Should I buy extra wallpaper?
Yes! Buy 1-2 extra rolls for pattern matching and repairs.
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