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Wallpaper Roll & Wall Area Calculator

Calculate the exact number of wallpaper rolls required, factoring in door/window cutouts, ceiling heights, and pattern repeat waste allowances.

Wall Dimensions

Room Length (feet)

Room Width (feet)

Ceiling Height (feet)

Standard Doors (deducts ~21 sq ft each)

Standard Windows (deducts ~15 sq ft each)

Roll Format

Pattern Repeat / Match Waste

Price per Roll ($ optional)

Rolls Required (Rounded Up)

8 rolls

(Cobertura de ~448 sq ft no total)

Net Wallpaper Area:

365 sq ft

= 33.9 m²

Estimated Material Cost:

$360.00

($45 / rolo)

Gross Wall Area:416 sq ft

Area Deducted for Openings:-51 sq ft

Margem de perda (desenho/recorte):+10%

How it works

Choose project scope: full 4-wall room or single accent wall.

Input length, width, ceiling height (8, 9, or 10 ft), and opening counts (doors and windows).

Select your roll type and pattern match style to view total rolls needed and project cost.

Frequently asked questions

How many square feet does a standard wallpaper roll cover?

A standard US double roll covers approximately 56 to 60 square feet (around 5.2 m²). Peel-and-stick adhesive rolls typically cover around 28 square feet.

Why do I need extra wallpaper for pattern repeats?

When wallpaper has a repeating pattern (such as damask or botanicals), adjacent strips must be shifted vertically to align the design, resulting in 10% to 20% trimmed scrap waste.

Is this tool free?

Yes. The site is supported by ads, so you never pay or need to create an account.

Does it work on mobile?

Yes. The page adapts to your screen and does not require installing any app.