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Terms of Use wikiHow is where trusted research and expert knowledge come together. Learn why people trust wikiHow
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Home and Garden
Home Maintenance
Walls and Ceilings
Interior Walls
Wallpaper
How to Measure for Wallpaper Download Article Co-authored by Patricia Penker and Hannah Madden
Last Updated: March 10, 2025 References
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Measuring your Rooms
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Ordering Your Wallpaper
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This article was co-authored by Patricia Penker and by wikiHow staff writer, Hannah Madden. Patricia Penker is an Interior Designer and the Owner of Exclusively To Design, one of the top residential design companies in South Florida. With over 25 years of experience, Patricia specializes in interior design, interior decorating, and home staging. Patricia holds a Bachelor’s degree in Fashion Design from the University of Cincinnati and a Master’s Certificate in Digital Design and 3D Modeling from CADDTrain. Patricia’s interior designs have been featured on HGTV’s Rip and Renew and Save My Bath and in celebrity homes. Exclusively To Design has been recommended on Houzz, Expertise - Best Home Staging in Miami and Best Interior Designers in Miami, and Best of HomeGuide. There are 8 references cited in this article, which can be found at the bottom of the page. This article has been viewed 49,271 times.
Wallpaper is a convenient way to spruce up your home by adding a touch of color or pattern to your walls without having to paint. You can add wallpaper a whole room, put up an eye catching accent wall, or even cover your whole house in a fresh style. Measuring your rooms for wallpaper can seem daunting, but by getting your math right and making sure you order enough, you can easily modernize your home by putting up wallpaper yourself.
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Part 1 Part 1 of 2:
Measuring your Rooms
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1 Measure the width and the height of your walls.[1]X Expert Source Patricia PenkerInterior DesignerExpert Interview You can measure from the ceiling down to the floor and across each wall to quickly get a height and width measurement. Using a metal tape measure rather than a soft cloth one will help keep your numbers accurate. Writing them down as you go is a good way to keep track of each room that you are measuring.[2]XResearch source
It is a good idea to double check your numbers, since you’ll be basing your wallpaper amount off of them.
If your room has baseboards, leave those out of your measurements unless you plan on wallpapering over them.
2 Multiply the width and height of each wall to get its square footage. You’ll want to calculate your wallpaper in square footage, since that is the way you’ll be ordering it. Multiplying your width number times your height number for one wall will give you its square footage.[3]XResearch source
For example, if your wall is 5 feet (1.5 m) x 7 feet (2.1 m), multiply those numbers to get 35 square feet (3.3 m2).
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3 Add the total square footage of each wall to get the square footage of the room. If your wallpaper will be covering an entire room, you’ll want to order it one room at a time, so getting the square footage of each room is important.[4]XResearch source
For example, if you have 3 walls in a room that are all 35 square feet (3.3 m2), add 35 square feet (3.3 m2) + 35 square feet (3.3 m2) + 35 square feet (3.3 m2) to get 105 square feet (9.8 m2) for the whole room.
Some websites have wallpaper calculators to help with these conversions, but they may be inaccurate, so make sure to always check your math.
4 Subtract any doors and windows from your calculations. Any areas that you won’t be wallpapering can be taken away from your final square footage count.[5]X Expert Source Patricia PenkerInterior DesignerExpert Interview Doors, windows, and cabinets are a few examples of wall fixtures that would not need to be wallpapered. You can measure the width and height of each object and then take that away from your final calculation to avoid buying too much wallpaper.[6]XResearch source
These calculations do not have to be exact and can be done quickly since they are just to help you avoid over-ordering large amounts of wallpaper.
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Ordering Your Wallpaper
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1 Calculate how many rolls of wallpaper you will need. A roll of wallpaper usually covers between 25 square feet (2.3 m2) and 36 square feet (3.3 m2). You can calculate how many rolls you will need by finding the exact amount of square footage your wallpaper roll will cover, which is usually listed on a website or in store, and adding those numbers until you cover your entire room square footage.[7]XResearch source
For example, if your room is 50 square feet (4.6 m2), and your wallpaper roll has 25 square feet (2.3 m2) of usable paper, you will need 3 rolls of wallpaper to cover your entire room and to have some extra left over.
2 Get more wallpaper than you think you will need to avoid running out. Even if you measure carefully, you may end up needing more wallpaper than you think. You should also add 10% more square feet to whatever you order to account for waste, because you will have to trim your wallpaper around edges and doorways.[8]XResearch source
3 Identify your pattern repeat for complex patterns. If you are buying a wallpaper with a pattern that matches up both horizontally and vertically on your wall, you’ll need to find out the wallpaper’s “pattern repeat.” This number is the distance between the two matching parts of the pattern, and can usually be found on a wallpaper’s website or in store. Once you have this number, all you have to do is multiply the pattern repeat number by the wallpaper roll amount, and you will know how much wallpaper your pattern will need.[9]XResearch source
For example, if your pattern repeat number is 18 inches (46 cm) (or 1.5 feet (0.46 m)), and your wallpaper roll contains 33 feet (10 m), multiply 1.5 feet (0.46 m) by 33 feet (10 m) to get 49.5 square feet (4.60 m2). This is how many square feet your wallpaper roll will cover.
This type of patterned wallpaper creates the most waste, since you will have to cut a lot off while trying to line up your pattern.
Often, these types of wallpapers are installed by professionals, but you can do them yourself with patience and planning.
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Question How do I calculate how much wallpaper I need? Patricia Penker Interior Designer Patricia Penker is an Interior Designer and the Owner of Exclusively To Design, one of the top residential design companies in South Florida. With over 25 years of experience, Patricia specializes in interior design, interior decorating, and home staging. Patricia holds a Bachelor’s degree in Fashion Design from the University of Cincinnati and a Master’s Certificate in Digital Design and 3D Modeling from CADDTrain. Patricia’s interior designs have been featured on HGTV’s Rip and Renew and Save My Bath and in celebrity homes. Exclusively To Design has been recommended on Houzz, Expertise - Best Home Staging in Miami and Best Interior Designers in Miami, and Best of HomeGuide. Patricia Penker Interior Designer Expert Answer Find the area of your room by multiplying the length by the height of each wall. Make sure you subtract the areas of any doors and windows. Thanks! We're glad this was helpful.Thank you for your feedback. If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow Yes No Not Helpful 1 Helpful 2
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Tips
Order wallpaper from the same batch to get an even color throughout. Most wallpapers are colored using dye in large batches, so you should try to order your wallpaper all at once so that you get paper that has all been dyed at the same time. Thanks Helpful 3 Not Helpful 0
Buy more wallpaper when you are dealing with patterns. Patterned wallpaper creates more waste since you will be cutting off edges when you line up the pattern. Thanks Helpful 2 Not Helpful 0
Submit a Tip All tip submissions are carefully reviewed before being published Name Please provide your name and last initial Submit Thanks for submitting a tip for review! Advertisement
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Co-authored by: Patricia Penker Interior Designer This article was co-authored by Patricia Penker and by wikiHow staff writer, Hannah Madden. Patricia Penker is an Interior Designer and the Owner of Exclusively To Design, one of the top residential design companies in South Florida. With over 25 years of experience, Patricia specializes in interior design, interior decorating, and home staging. Patricia holds a Bachelor’s degree in Fashion Design from the University of Cincinnati and a Master’s Certificate in Digital Design and 3D Modeling from CADDTrain. Patricia’s interior designs have been featured on HGTV’s Rip and Renew and Save My Bath and in celebrity homes. Exclusively To Design has been recommended on Houzz, Expertise - Best Home Staging in Miami and Best Interior Designers in Miami, and Best of HomeGuide. This article has been viewed 49,271 times. 12 votes - 92% Co-authors: 4Updated: March 10, 2025 Views: 49,271 Categories: Wallpaper
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Yes No Advertisement Cookies make wikiHow better. By continuing to use our site, you agree to our cookie policy. Co-authored by: Patricia Penker Interior Designer Co-authors: 4Updated: March 10, 2025 Views: 49,27192% of readers found this article helpful. 12 votes - 92% Click a star to add your vote 92% of people told us that this article helped them.
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Download Article Co-authored by Patricia Penker and Hannah Madden 
How toMeasure Square Footage 
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Co-authored by: Patricia Penker Interior Designer This article was co-authored by Patricia Penker and by wikiHow staff writer, Hannah Madden. Patricia Penker is an Interior Designer and the Owner of Exclusively To Design, one of the top residential design companies in South Florida. With over 25 years of experience, Patricia specializes in interior design, interior decorating, and home staging. Patricia holds a Bachelor’s degree in Fashion Design from the University of Cincinnati and a Master’s Certificate in Digital Design and 3D Modeling from CADDTrain. Patricia’s interior designs have been featured on HGTV’s Rip and Renew and Save My Bath and in celebrity homes. Exclusively To Design has been recommended on Houzz, Expertise - Best Home Staging in Miami and Best Interior Designers in Miami, and Best of HomeGuide. This article has been viewed 49,271 times. 12 votes - 92% Co-authors: 4 Updated: March 10, 2025 Views: 49,271 Categories: Wallpaper 
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1 Measure the width and the height of your walls.[1] You can measure from the ceiling down to the floor and across each wall to quickly get a height and width measurement. Using a metal tape measure rather than a soft cloth one will help keep your numbers accurate. Writing them down as you go is a good way to keep track of each room that you are measuring.[2] 
2 Multiply the width and height of each wall to get its square footage. You’ll want to calculate your wallpaper in square footage, since that is the way you’ll be ordering it. Multiplying your width number times your height number for one wall will give you its square footage.[3] 
3 Add the total square footage of each wall to get the square footage of the room. If your wallpaper will be covering an entire room, you’ll want to order it one room at a time, so getting the square footage of each room is important.[4] 
4 Subtract any doors and windows from your calculations. Any areas that you won’t be wallpapering can be taken away from your final square footage count.[5] Doors, windows, and cabinets are a few examples of wall fixtures that would not need to be wallpapered. You can measure the width and height of each object and then take that away from your final calculation to avoid buying too much wallpaper.[6] 
1 Calculate how many rolls of wallpaper you will need. A roll of wallpaper usually covers between 25 square feet (2.3 m2) and 36 square feet (3.3 m2). You can calculate how many rolls you will need by finding the exact amount of square footage your wallpaper roll will cover, which is usually listed on a website or in store, and adding those numbers until you cover your entire room square footage.[7] 
2 Get more wallpaper than you think you will need to avoid running out. Even if you measure carefully, you may end up needing more wallpaper than you think. You should also add 10% more square feet to whatever you order to account for waste, because you will have to trim your wallpaper around edges and doorways.[8] 
3 Identify your pattern repeat for complex patterns. If you are buying a wallpaper with a pattern that matches up both horizontally and vertically on your wall, you’ll need to find out the wallpaper’s “pattern repeat.” This number is the distance between the two matching parts of the pattern, and can usually be found on a wallpaper’s website or in store. Once you have this number, all you have to do is multiply the pattern repeat number by the wallpaper roll amount, and you will know how much wallpaper your pattern will need.[9] 
Patricia Penker Interior Designer Patricia Penker is an Interior Designer and the Owner of Exclusively To Design, one of the top residential design companies in South Florida. With over 25 years of experience, Patricia specializes in interior design, interior decorating, and home staging. Patricia holds a Bachelor’s degree in Fashion Design from the University of Cincinnati and a Master’s Certificate in Digital Design and 3D Modeling from CADDTrain. Patricia’s interior designs have been featured on HGTV’s Rip and Renew and Save My Bath and in celebrity homes. Exclusively To Design has been recommended on Houzz, Expertise - Best Home Staging in Miami and Best Interior Designers in Miami, and Best of HomeGuide.