Wallpaper Calculator
Calculate wallpaper rolls needed based on room dimensions and roll size.
Room Dimensions
Deductions
Roll Size
Wall Area
0 sq ft
Rolls Needed
0
Coverage
0 sq ft/roll
How to Use This Wallpaper Calculator
Our free wallpaper calculator determines how many rolls you need. Enter your wall dimensions for an accurate count including waste for pattern matching.
Standard US rolls cover about 56 sq ft, double rolls 112 sq ft. The calculator accounts for pattern repeat which increases waste.
The calculator subtracts area for windows and doors. Round up to the nearest whole roll for future repairs.
Related Topics
Frequently Asked Questions about Wallpaper Installation
How do I calculate how many rolls I need?
Measure wall area, subtract windows/doors, divide by roll coverage (56 sq ft standard). Add 10-15% for waste.
How much wallpaper do I need for a room?
A 12x12 room needs about 4 single rolls or 2 double rolls for walls minus doors and windows.
How much does wallpaper installation cost?
DIY: $25-$100 per roll plus $10-$30 supplies. Professional: $50-$100 per roll for labor.
Do I need extra wallpaper for pattern matching?
Yes. Add 1 roll per 3-4 rolls for small patterns, 1 per 2-3 for large patterns.
What is peel-and-stick vs traditional wallpaper?
Peel-and-stick is self-adhesive and removable — ideal for renters. Traditional requires paste but offers more patterns.
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