If you’re planning a decorating project, you may wonder: how many square feet are in a roll of wallpaper?

The quick answer is:

$1\text{ Roll}\approx56\text{ Square Feet}$ 1 Roll≈56 Square Feet

A standard U.S. single roll of wallpaper typically covers about 56 square feet, although the actual usable coverage is often lower due to trimming and pattern matching.

Quick Answer

Most standard wallpaper rolls measure approximately:

20.5 inches wide
33 feet long

Coverage calculation:

$20.5\text{ in}\times33\text{ ft}\approx56\text{ ft}^2$ 20.5 in×33 ft≈56 ft2

Result:

One wallpaper roll covers about 56 square feet

Standard Wallpaper Roll Dimensions

Wallpaper is commonly sold in rolls with standard dimensions.

Measurement	Standard Size
Width	20.5 inches
Length	33 feet
Coverage	About 56 sq ft

Many manufacturers also package wallpaper as double rolls.

How Many Square Feet Does a Roll Cover?

Although the roll contains approximately:

$56\text{ Square Feet}$ 56 Square Feet

the usable coverage is often closer to:

$25-35\text{ Square Feet}$ 25−35 Square Feet

per roll depending on:

Pattern repeats
Wall height
Trimming waste
Matching requirements

This is why manufacturers often provide room coverage estimates.

Wallpaper Coverage Chart

Number of Rolls	Approximate Coverage
1 Roll	56 sq ft
2 Rolls	112 sq ft
3 Rolls	168 sq ft
5 Rolls	280 sq ft
10 Rolls	560 sq ft

Actual coverage may vary based on installation conditions.

How to Calculate Wallpaper Needed for a Room

Step 1: Measure Wall Area

Use:

$\text{Wall Area}=\text{Length}\times\text{Height}$ Wall Area=Length×Height

For multiple walls, add the areas together.

Step 2: Subtract Doors and Windows

Remove large openings from the total area.

Step 3: Divide by Roll Coverage

Example:

A room requires:

$224\text{ Square Feet}$ 224 Square Feet

Divide by roll coverage:

$224\div56=4\text{ Rolls}$ 224÷56=4 Rolls

You would need approximately 4 rolls before accounting for waste.

Factors That Affect Coverage

Pattern Matching

Large pattern repeats require extra material.

This can significantly reduce usable coverage.

Wall Height

Taller walls require longer strips, increasing waste.

Obstacles

Doors, windows, built-ins, and corners can affect the amount of wallpaper needed.

Installation Experience

DIY installations often generate more waste than professional installations.

Common Wallpaper Estimation Mistakes

Using Gross Coverage Only

Many people assume every square foot of wallpaper can be used.

Pattern matching often reduces actual coverage.

Forgetting Extra Material

Professionals often recommend purchasing:

$10\%-15\%\text{ Extra}$ 10%−15% Extra

for repairs and mistakes.

Ignoring Pattern Repeat Information

Always check manufacturer specifications before ordering.

Real-World Example

Suppose you have an accent wall measuring:

12 feet wide
8 feet high

Area:

$12\times8=96\text{ Square Feet}$ 12×8=96 Square Feet

Wallpaper rolls needed:

$96\div56\approx1.7$ 96÷56≈1.7

Since partial rolls aren’t sold:

You’ll need 2 rolls at minimum.

FAQs

1. How many square feet are in a standard roll of wallpaper?

A standard roll typically contains about 56 square feet of wallpaper.

2. How much wall area does one roll cover?

Usable coverage is often between 25 and 35 square feet after trimming and pattern matching.

3. What size is a standard wallpaper roll?

Most standard rolls are approximately 20.5 inches wide and 33 feet long.

4. Should I buy extra wallpaper?

Yes. Most professionals recommend purchasing 10–15% extra.

5. How do I calculate how many rolls I need?

Measure total wall area and divide by the manufacturer’s stated roll coverage.

Conclusion

Understanding how many square feet are in a roll of wallpaper helps you estimate materials accurately and avoid costly shortages. A standard wallpaper roll typically contains: