How to measure the size of your TV


If you are planning to buy a new TV, the first question that seems to be asked: which TV screen size to choose? The answer depends on the space of your home, but more precisely the distance to which you sit in front of the TV.

In the best of all worlds, the distance between you and your screen should be one of the main considerations before buying a new TV. This question is about the perfect cinema spot: you want to be close enough to see, but not too close because it’s uncomfortable.

In the world of TV, when the concept of screen size is discussed, it is not the dimensions of the TV that is referred to but its diagonal, expressed in centimeters or inches (1 inch = 2 , 54 cm).

To know which TV will be suitable for the layout of your interior, several criteria must be taken into account: the diagonal, the layout of your room (and more precisely the distance to which you sit in front of the TV) as well as the type of content you want to watch.

Why are TV screens given in inches?

 Previously, in the era of CRT TVs, we always spoke in cm to designate the diagonal of the screen. Since the arrival of LCDs, the size is expressed in inches, as for computer monitors.

calculate the size of a TV cm or inch

 NB: While the international standard recommends the use of the meter and the unit of measurement (metric system), the inch is still used in the fields of industry and commerce of smart-phones, tablets, screens and TV (and other objects such as vehicle wheels, thread sizes, etc …)

Measure the tiller of your TV Install your TV in a small space parameter the display format and the distance of recoil
Here! You have decided to replace your old screen with a nice screen. Only, you have a place in your furniture or your wall. You cannot take any screen, you will have to measure the size of your TV. It’s not very complicated, but you still need some information to make the right choice. This is the purpose of this article.

Following is the account of how to measure a TV:

Measure the table of your TV:

Measure your screen diagonally from one corner to the opposite corner. It is this measurement that the builders present to you. Thus, there are screens 32 inches (81 cm). This measurement is not that of the width (but of the bottom of the screen, for example), but it is the measurement of the lower right corner.

Measure the screen well and not the frame. Some people make the mistake of measuring diagonally, but they include in their measurement the thickness of the frame, the case. Manufacturers give the only diagonal of the screen, not that of the TV, even if today, the boxes are very small.
Install your TV in a small space.

In this case, you must take the measurements of the TV and not only the screen. Measure the width, height, and depth of your TV. Do not forget that your position will be narrow space!

Do not take a TV too big (Read here about 43 inches TV buying guide)! There must be room around the station. Suppose you want a 46 inch (117 cm). It’s about 113 cm wide and 63.5 cm high. If your space is 114 cm wide, it will be beautiful? He will look too “stuck”. Instead, take a 40-inch (102 cm) TV. it will fit better especially if you have a Home Theater installation.

Set the display format and setback distance:

There is a relationship between the format and the size of your screen. The format of a TV picture is the ratio of the width of this picture to its height. TVs have different formats. So, on old TVs, we have the classic 4: 3 format, which means that the picture is displayed on 4 inches wide and 3 inches high. On large screens, we have a 16: 9 format, which is 16 inches wide by 9 meters high.

A standard TV (in 4: 3) and a widescreen TV (in 16: 9) may very well have seen the same diagonal, 32 inches for example, but in case of the size of the image, it will be totally different. On the 4: 3 TV, the image will be rather square, while in 16: 9, the same image will be more elongated in the direction of the width.

The big screens appeared when the producers of chains and cinema wanted to offer to the spectators, during the viewing of the films, a quality worthy of a true movie theater. Behind this idea, there is the desire to attract people to the cinema. It was, therefore, necessary to change the display format. The manufacturers then released the 16: 9 format (cinema quality). With this format, the image is bigger, more alive and the black bands do not “eat” the image anymore.

Make a small calculation to know how big your future big screen should be so that it can correctly display the standard format (4: 3). If you have a standard 4: 3 TV and want to continue to watch your favorite show in the same format, but on a big screen, multiply the diagonal of your old set screen by 1.22. You will get the size of the big screen to buy.

Your old TV has a diagonal of 40 inches (102 cm) with a 4: 3 format. You want to change it, but you do not want the size of your image to be smaller. You’ll have to take a 50-inch screen if you do not want a smaller 4: 3 picture. Indeed, 1.22 x 40 = 49. As a 49-inch TV does not really exist, take a 50-inch (127 cm).

How far from your job should you place yourself for the best vision? It will depend on the size of your TV. You have installed your post: it only remains to position your chairs and your sofa at a good distance. Here is a table that tells you how far you can go:

Back Distance Screen

27 “1.00 – 1.70 m

32 “1.20 – 2.00 m

37 “1.40 – 2.30 m

40 “1.50 – 2.50 m

46 “1.70 – 3.00 m

52 “2.00 – 3.20 m

58 “2.20 – 3.60 m

65 “2.50 – 4.20 m


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