Wallpaper Calculator | How to Estimate How Much Wallpaper You Will Need

Graham & Brown

Graham & Brown

How do I calculate how much wallpaper I will need for my room?

You will need to work out how much wallpaper you need before you buy. Make sure you're not left short when installing, and you don’t want to over spend and buy too much.

Use our wallpaper calculator

Measure your room wall by wall. Enter your measurements below to estimate appropriately

Wallpaper Calculator
Galbraith & Paul  www.galbraithandpaul.com .  See something you like? Available through dvd Interior Design.

Galbraith & Paul www.galbraithandpaul.com.

See something you like? Available through dvd Interior Design.

How Much Wallpaper Do I Need Formula:

Wall area, - 20 square feet per door, - 15 square feet per window, and all of this divided by the usable number of square feet per roll (average).

For American rolls this is:

0"-6": 32 square feet

7"-12": 30 square feet

13"-18": 27 square feet

19"-23": 25 square feet

How much wallpaper do I need? How many rolls do I need? What is the total cost?

Our wallpaper calculator requires you to input some data first. It includes the following values:

  • Room dimensions: you need to type in the length, width, and height of the room. If your room has a different shape that a rectangular cuboid, you can also input the surface area directly. We recommend that you measure the height of your room anyhow if you want to include pattern repeat into the calculations.

  • Doors: you can leave the default dimensions of doors or customize them. Once you will type the number of doors in, the wallpaper calculator will find their area automatically.

  • Windows: again, you can choose the default dimensions or type in custom ones. If you have windows of different sizes in your room, you can also calculate the total area manually and input this value into the appropriate box.

  • Wallpaper specifications: these includes values such as the cost of one wallpaper roll, its length, width, and the paper repeat (measured vertically). All of these values can be found on the wallpaper packaging.

Once you type in all of these values, our wallpaper calculator will find the following for you:

  • Adjusted height: this is the actual length of wallpaper you will need to use per stripe to account for the pattern repeat.

  • Adjusted room area: takes into consideration both the pattern repeat and openings.

  • Number of rolls: the total number of wallpaper rolls you need to buy. This number is always rounded up.

  • Total cost: the total amount of money you need to pay for your wallpaper.

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Some of Our Favorite Online Resources for Wallpaper!

It's Back!

Yes, wallpaper for your home is back and it's back in a big way!.  

Despite all those tiring memories of scraping that old yellow wallpaper from the past (1970?) off of many walls to clean them up with a fresh application of paint, I am excited to add paper as an instant update to any room, interior design with wallpaper can be fun. The options available today have me forgetting those painful memories and wanting more.  It's looking great in the entry, the bathroom and on the ceiling. It is a welcomed trend shift for an update. 

So here are the latest prints and designs of wallpaper designs for your walls, ceilings and bookcases. Take a look at some of the best interior design wallpaper, everything from florals, to wood textures, murals and more.

 ( click here to see Part 1 of our selections) Timeless and Classic, Funky and Fun

( click here to see Part 2 of our Selections ) Motifs and Murals , Custom NY Printers and more.

wallpaper flavor paper kids room vaboom designer vinas .jpg

image via designer Ghislaine Vinas with Flavor Paper, photo via Garret Rowland.

Flavor Paper 

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Serena & Lily

Serena & Lily

Serena & Lily

Thank you For stopping by. I hope you were inspired, or found what you were looking for.



Here’s another Wallpaper Calculator for simple calculations

How Much Wallpaper Do I Need Calculator

Height of Walls (ft):
Sum Total Length of Walls (ft):
Number of Doors:
Number of Windows:
Width of wallpaper roll:
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UPDATES: This week is going to be a crazy week with market approaching and a few new project prospects to meet, but i wanted to share with you a few exciting developments occurring this Fall.


Anticipation is in the air, as I am super excited to announce that I will be a COMMUNITY LEADER for the return of the BLISSDOM CONFERENCE in Nashville, TN this November.

Yes, it has been 10 years since the last conference, and I can't tell you how important those connections that I have made many years ago have been for me as I evolve my online experience. Blissdom is all about the power of community, wisdom, and that rising tides lift all boats. We are a community of women that works to improve our lives and businesses because we know that true success depends on both.

As a Community Leader, I will help to ensure the Blissdom vision is a reality, and serve as an official ambassador of Blissdom, by helping to share the culture and any updates about Blissdom on social media leading up to the event.

While at Blissdom, make sure to visit the WORKSHOPS where I will help to welcome fellow attendees and answer questions as they arise. Additionally, I will facilitate discussions during the Q&A time at the end of the workshops.

DM me on Instagram if you will be attending. This is going to be another amazing year!

Meanwhile, did you know that I recently published our "Instagram Strategy Guide for Interior Designers"?

It's at a new launch rate of $37.00 for the full guide. Take advantage of the low introductory pricing while it lasts.

I compiled a list of strategies and answered questions that are being asked at our live events. I think you find this guide helpful in gaining some insight and traction on this growing platform.

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dvd Interior Design has been selected as a High Point Market Blogger to share updates on trends and new products as seen at High Point Fall Market this October!

Stay tuned. We will be preparing a pre-market update " Sneak Peek" into Century Furniture, Highland House, The Insiders Tour, and more, including a few parties and all the places we plan to visit.

If you're not following me on Instagram, you're missing out big on a lot of design tips and resources, including live event coverage in stories. - follow me here!

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Wallpaper Calculator to Estimate How Much Wallpaper You Will Need

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