How to Measure a TV so You Buy the Right Size
- TVs are marketed based on the diagonal measurement of the screen.
- When measuring a TV for your space, always take into account the bezel and stand or mount.
- Divide your viewing distance by two to get an ideal screen size for your space.
Whether you’re buying a new TV or moving an existing one, it is key to properly measure so you can make sure it fits in your space. This is especially true when you’re looking to fit it into an entertainment unit or mount it on a wall.
While many of us think of the screen size first, the most important dimensions are actually the width, height, and depth.
When you hear about TV sizes like 50-inch, 65-inch, 75-inch, that refers to the diagonal measurement of the screen, not the dimensions of the TV itself. Despite being a common measurement, the diagonal screen size isn’t the core measurement you need to figure out if a certain size TV will fit in a specific space. A 65-inch TV is not 65 inches wide, it’s usually about 58 inches.
It’s important to consider the full measurements of the entire unit, which include the plastic TV frame that goes around the screen, known as the bezel, and the stand, if you’re using one. The frame and bezel can add up to 3 inches to the width or height of the TV and stands can add even more. Stands can also add more depth as they extend beyond the front and back of the TV itself.
Darius Jackson, senior in-home design agent for Best Buy, gives his best tips for measuring your TV.
Quick tip: To determine the best TV size for a specific space, Darius suggests measuring the distance between the seating area and the proposed mounting location and divide by two. So if your couch is 8 feet from the wall, that’s 96 inches, divided by two is 48 inches. A 48-inch screen would be ideal.
How to measure the screen size
If your TV has a stand, be sure to include it in your measurements. Always exclude the bezel in your screen size measurement.
The screen size measurement will help determine the ideal viewing distance from the screen. However, when it comes to placement and mounting, the dimensions of the TV are much more important than the screen size.
A TV’s screen size is measured diagonally across the screen, excluding the bezel. Start at one corner at the bottom and measure across the TV to the other corner at the top (or start at the top and measure across to the bottom). The measurement is based on the actual size of the screen, so the viewable area might be smaller due to the bezel or frame.
How to measure the width
If you’re mounting the TV inside a cabinet or on a piece of furniture, you need to know if it will fit. Width is the distance from side to side. To measure the width of the TV, start at one corner and go all the way along the bottom or the top to the other side. You are measuring the total width from edge to edge, including the bezel and frame, since you need to know if it will fit in the space.
How to measure the height
Whether you are mounting the TV on the wall or putting it on a piece of furniture, you also need to know the height. The height is the distance from the top to the bottom of the TV, including the bezel. To measure the height of the TV, start at one of the bottom corners and measure up to the top of the TV. If you use a stand, measure from the base of the stand to the top of the TV. This will ensure that you have the total height, and that all aspects of the TV are accounted for to give you a better idea of what can fit in your space.
How to measure the depth
The depth is the distance from the front to the back of the TV, measuring how thick the TV is. This will tell you how far it will stick out from the wall or whether it will fit into an alcove or entertainment unit. To measure the depth of the TV, start at the front edge and measure back to the furthest point.
Quick tip: If you don’t have a tape measure, you could use a few sheets of 8.5 inch by 11 inch paper to measure the TV. You can also use a dollar bill, which is 6 inches long and 2.5 inches tall.
How to determine the right viewing distance
Use the viewing distance calculation to determine how far you should sit from the TV.
To get the most out of your TV, you need to sit a certain distance away from it. There is an ideal viewing distance which is based on the screen size. Best Buy suggests multiplying your screen size by 1.5 to get the minimum viewing distance. This calculation will result in inches, so divide it by 12 to find how many feet.
So for a 60-inch TV, you would multiply 60 inches times 1.5. This results in 90 inches, or 7.5 feet. To get the maximum viewing distance, you would double this result. So, 90 inches multiplied by two will equal 180 inches or 15 feet. So, for a 60-inch TV, it should be viewed from between 7.5 and 15 feet away for the best experience. You can tweak this for super high resolution TVs like 4K UHD or 8K, where the minimum viewing distance can be reduced so you can see more detail. This is due to the fact that high resolution TVs have less digital noise when viewed up close, whereas a lower resolution TV would have more digital noise the closer you are to it.
Best tape measures
We test and recommend the best tape measures. Here are a few of our top picks:
- Best overall: Stanley 25-Foot Fatmax Tape Measure – See at Home Depot
- Best budget: Stanley PowerLock 25-Foot Tape Measure – See at Home Depot
The main measurement you see of a TV is the diagonal screen size, not the width. You need to know the actual width, height, and depth of the entire unit which includes the TV frame, the bezel, and the stand. This will help you determine whether or not the TV will fit in the space you want it to. You can calculate the ideal screen size for a space by dividing the viewing distance by two. For example, if your couch is 10 feet from your entertainment unit, your ideal screen size is 60 inches because 10 feet divided by two equals 5 feet, or 60 inches.
Palm Springs-based automotive writer and gearhead Freddy Sherman can usually be found in his garage, tinkering with his 1968 Pontiac Firebird. When he’s not cruising in the Firebird, he can be found driving one of the more than 50 new cars (and 10 new motorcycles) he drives each year to review. Freddy’s content has been featured on Yahoo!, Daily Mail Online, CNN and in Business Traveler magazine.
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How Wide Is A TV Based On Screen Size?
If you’re buying a new TV then don’t mistake the diagonal for the width. Here’s the trick to calculating the actual width of your new TV.
If you’re buying a new TV then size is likely to play a crucial role in the decision-making process. However, when deciding how well a TV will fit in a room, people often confuse the size of the TV advertised by the company with the actual size of the TV. Here’s a handy guide to make sure you don’t make the same mistake.
When buying a new TV, manufacturers are always quick to point out the screen size is x but that doesn’t tell you everything. What the TV manufacturers are actually referring to is the diagonal measurement of the TV. In other words, the width of the TV when measured from the top-left corner to the bottom-right corner or vice versa. While that’s all well and good for deciding between a 55-inch and 60-inch TV, neither size refers to the actual width of the TV. Considering the TV is going to fit in a space that’s determined by the actual width, it’s good to understand how to calculate the actual width when you need to.
Related: QLED Vs. OLED: What’s The Difference and What’s Better?
Remember Pythagoras from math class? If you do then this should be a breeze. After all, TV-makers are telling you the diagonal of a triangle and that’s usually what Pythagorean theorem looks to calculate. In times where you have the diagonal already, then figuring out the width (or the height) requires reversing the formula. As a refresher, Pythagorean theorem is a2 + b2 = c2. In this instance, we know C as that’s the diagonal and while you’d normally need to know either A or B to calculate the other, aspect ratios are here to fill in the gaps.
For the last decade, most TVs sold feature a 16:9 aspect ratio. This effectively means for every 16 inches in width, there’s 9 inches in height. This formula therefore works for any TV that uses a 16:9 aspect ratio. If you’re considering a TV with a less than usual aspect ratio, then as long as you know the ratio, the same method can be applied. Using Pythagorean theorem, the diagonal squared is equal to the height squared + the width squared. With the aspect ratio used as these values then its 16 squared (256) + 9 squared (81) which equals 337. As 16 in the aspect ratio is the width, you divide 16 by the square root of 337 to end up with 0.87 (when rounded). Now to calculate the width of a TV you simply multiply the diagonal by 0.87. If all that sounds too confusing then here’s the shortcut: If the aspect ratio is 16:9 then the rest of the math doesn’t matter as much as you can just multiply the diagonal by 0.87 to get a fairly accurate TV width measurement. For example, to calculate the width of a 50-inch diagonal TV then multiple 50 by 0.87 to end up with 43.5 inches – the width of the TV.
Here’s some other common TV sizes and their widths based on the formula: 32-inch TV (32 x 0.87) = 27.8 inches in width, 40-inch TV (40 x 0.87) = 34.8 inches in width, 50-inch TV (50 x 0.87) = 43.5 inches in width, 60-inch TV (60 x 0.87) = 52.2 inches in width, 70-inch TV (70 x 0.87) = 60.9 inches in width, 80-inch TV (80 x 0.87) = 69.6 inches in width
While this formula is pretty accurate for almost any 16:9 aspect ratio TV (give or take a decimal or two), you should remember the calculations are only for the width of the screen. Depending on the make and model, bezels come into play and their widths also need to be added to get the true width of the TV. Although, with many new TVs coming with incredibly small bezels, that’s less of a problem these days.
More: What TV Size Is Right For Your Room
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About The Author
John Finn is a technology editor and writer for Screen Rant. John has been covering technology since 2014 and focuses on where tech meets the movie and TV industry. A Psychology graduate from England who now lives in the US, John previously worked in the aviation industry as an airline reviewer. You can find John on Twitter @J_Finns or email at john [at] screenrant [dot] com.
How to find out the dimensions of the TV in centimeters: diagonal, width, height
Author: Dmitry Mukharev
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The most popular characteristic of a TV is its diagonal in inches. From it you can find out not only the size of the diagonal in centimeters, but also the approximate width or height of the device.
Choosing a TV is a very difficult task. They differ from each other in many characteristics. This is the resolution, and brightness, and the speed of the matrix, and, of course, the banal design. But the main characteristic of any TV is its diagonal, which is traditionally measured in inches.
What is an inch? How many centimeters are in it, and how to understand that a TV with a certain diagonal will fit on the nightstand or niche allotted to it. Don’t worry, everything is easier than it seems, and now we will see it.
How many centimeters are in an inch
As you know, an inch is a non-metric unit of length. The International Organization of Legal Metrology (OIML) lists the inch as one of those units of measurement “which should be phased out as soon as possible. However, all manufacturers of TVs, monitors, smartphones and other equipment continue to actively use this unit of measurement to describe the size of their screens.
Therefore, when choosing a TV, you simply need to be able to convert inches to centimeters. Thankfully, this is pretty easy to do. It is enough to know only that there are 2.54 cm in one inch. And knowing this, you will easily understand that a 43-inch TV actually has a diagonal of 109.22 centimeters.
Difficulties start a little later. What is a diagonal? This is the distance from one corner of the TV to the opposite. But how does this help us understand that the TV will fit on a nightstand of a certain length or in a niche with a clearly defined length and width?
How to find out the length and width of the TV diagonally
Here, knowledge of the usual school curriculum can help us. Any student knows the Pythagorean theorem very well: the square of the hypotenuse is equal to the sum of the squares of the legs. What is a TV? In fact, these are two identical right triangles. The diagonal of such a triangle will be the diagonal of the TV, and the legs adjacent to it are nothing more than its length and height.
Most modern televisions use screens with an aspect ratio of 16:9. Let’s take its diagonal as D, its length as 16x, and its height as 9x. Now we have to solve the simplest equation to find x.
D 2 = (16x) 2 + (9x) 2 . Let’s continue the transformations: D 2 = 337x 2 . X = root of (D 2 /337). Well, having found x, it is enough to multiply this figure by 16 or 9. So we get the length and height of the TV, respectively.
Let’s put this into practice and find out the dimensions of a 43-inch TV. For example, the popular Xiaomi Mi TV 4A 43 T2 is enough.
X \u003d root of (43 2 / 337) \u003d 2.34.
Its length in inches is: 2.34 * 16 = 37.48. Convert inches to centimeters: 37.48 * 2.54 \u003d 95.2 cm.
In the same way we find the height of the TV: 2.34 * 9 = 21.06. 21.06*2.54 = 53.5 cm.
In other words, our 43-inch TV has dimensions of 95.2×53.5 cm. The fact is that we calculated the dimensions of its panel without taking into account the thickness of the frames, so after completing the calculations, throw a few more centimeters on the frames on all sides of the screen. Do not forget about the height of the stand used on the TV.
Of course, it is not always convenient to carry out such calculations every time. Therefore, we have prepared for you a small plate with the dimensions of TVs of the most common diagonals.
|Diagonal inches||Screen width in cm||Screen height in cm|
At what distance is it better to install the TV
It is also important to pay attention to the diagonal of the TV because the human eyes are a rather sensitive and complex organ. Too small a diagonal will cause them to tire more than necessary, straining to see the smallest details.
By the way, an excessively large diagonal of the TV will lead to the same effect. Only this time, the eyes simply won’t be able to capture the whole picture at once. A similar effect can be observed in a small cinema if you sit on one of the front rows of the hall. Insufficient screen resolution can be added to this, when the whole picture is divided into many pixels.
In general, the optimal distance to the picture can be determined by the formula 1.5*D, i.e. it is equal to one and a half diagonals of a TV screen. In the case of the same Xiaomi Mi TV 4A 43 T2, this will be 64.5 inches or slightly less than 164 centimeters.
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Diagonals of TV monitors in cm and inches (Size table)
The material contains reference tables for TV and monitor diagonal sizes in centimeters and inches for 16:9 and 4:3 screen formats, as well as their width and height dimensions in cm and inches depending on the diagonal.
Table of diagonals of TV screens of monitors in cm and inches 16:9
The table contains TV diagonals in centimeters and inches for widescreen 16:9 screens, as well as their height and width depending on the diagonal
|TV size in inches||TV diagonal in centimeters||Screen width in cm||Screen height in cm||Screen width, inch||Screen height, inch|
Table of TV and monitor sizes in cm and inches in 4:3 format
The table contains TV and monitor diagonals in cm and inches for standard 4:3 screens, as well as their height and width depending on the diagonal
|TV diagonal in inches||TV diagonal in centimeters||Height cm||Width cm||Height, inch||Width, inch|