Construction & Materials
Wallpaper Rolls Calculator
Estimate the number of wallpaper rolls needed for a room including pattern repeat waste.
Your inputs
Change any value to update the result instantly.
Wallpaper rolls needed
9 rolls
Total wall area
384 ft²
Usable area per roll
47.9 ft²
Total roll coverage bought
431.2687 ft²
Formula and working
rolls = wall area ÷ usable area per roll
- 1
Collect the inputs
Room perimeter = 48 ft; Wall height = 8 ft; Roll width = 20.5 in; Roll length = 33 ft; Pattern repeat waste = 15 %
- 2
Apply the formula
rolls = wall area ÷ usable area per roll
- 3
Result
Wallpaper rolls needed = 9 rolls
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Report a mistake or request an improvement
Tell us if a formula, unit, explanation, or result needs attention. Your message will include this calculator’s name and page.
Related calculators
Drywall Sheets & Joint Compound Calculator
Estimate the number of drywall sheets and buckets of joint compound needed for a room.
Flooring Calculator with Waste Allowance
Estimate flooring material required for a room including a 10% (or custom) waste allowance.
Paint Coverage Calculator
Estimate the gallons of paint needed for walls and ceilings across multiple coats.
Tile & Grout Calculator
Estimate the number of tiles and grout needed for a floor or wall area.
Asphalt Tonnage Calculator
Estimate the tonnage of asphalt needed to pave an area at a given thickness and density.
Board Feet Calculator
Calculate board feet of lumber from thickness, width, length and quantity.