How to measure the size of your TV: 7 steps (with pictures)

How to measure the size of your TV: 7 steps (with pictures)
How to measure the size of your TV: 7 steps (with pictures)

Here is ! You have decided to replace your old TV with a brand new one with a beautiful screen. Only, you have a little narrow place in your furniture or along your wall. You can't just take just any screen, you'll have to measure the size of your TV. It's not very complicated, but you still need to have some information to make the right choice.


Part 1 of 3: measuring the tiller of your TV

Measure a TV Step 1

Step 1. Measure your screen diagonally, from one corner to the opposite corner

It is this measure that the manufacturers present to you. Thus, there are 32 inch (81 cm) screens. This measurement is not that of the width (the one at the bottom of the screen, for example), but it is indeed the measurement of the diagonal from the upper left corner to the lower right corner.

Measure a TV Step 2

Step 2. Measure the screen, not the frame

Some people make the mistake of measuring diagonally, but they include in their measurement the thickness of the frame, of the case. The manufacturers give the only diagonal of the screen, not that of the television set, even if today, the boxes are very small.

Part 2 of 3: set up a TV in a small space

Measure a TV Step 3

Step 1. Take all measurements of the TV, not just the screen

Measure the width, height and depth of your TV. Remember that your new post will have to fit into a narrow space!

Measure a TV Step 4

Step 2. Don't take a TV that's too big

Always leave room all around the station. Suppose you fancy a 46 inch (117 cm). It is a device that is approximately 113 cm wide by 63.5 cm high. If your space is 114cm wide by 114cm high, your post will logically fit, but will it be aesthetically beautiful? He will seem too "stuck". Instead, take a 40-inch (102 cm) television, it will fit better especially if you have a Home cinema type installation.

Part 3 of 3: set up the display format and backing distance

Measure a TV Step 5

Step 1. There is a relationship between the aspect ratio and the size of your screen

The aspect ratio of a television picture is the ratio of the width of that picture to its height. Televisions display different formats. So, on old televisions, we have the classic 4: 3 aspect ratio, which means that the picture is displayed 4 inches wide and 3 inches high. On large screens, we tend to have a 16: 9 aspect ratio, i.e. an image 16 inches wide by 9 high.

  • A standard TV (in 4: 3) and a large screen TV (in 16: 9) can very well see the same diagonal, 32 inches for example, but the size of the image will be totally different. On 4: 3 TV, the picture will be rather square, while in 16: 9, the same picture will be more elongated in the direction of the width.
  • The big screens appeared when the producers of channels and cinema wanted to offer spectators, when watching films, a quality worthy of a real cinema hall. 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 larger, more alive, the black bands no longer “eat” the image.
Measure a TV Step 6

Step 2. Do a little math

You need to know how big your future big screen should be so that it can display the standard aspect ratio (4: 3) correctly! If you have a standard 4: 3 TV and want to continue watching your favorite series 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 is 40 inches (102 cm) diagonal with a 4: 3 aspect ratio. You want to change it, but you don't want your image size to be smaller. You're going to have to take a 50 inch (127 cm) screen if you don't want a smaller 4: 3 image. Indeed, 1.22 x 40 = 49. As a 49 inch television does not really exist, take a 50 inch (127 cm)

Measure a TV Step 7

Step 3. How far from your post should you be in order to have the best vision?

It will depend on the size of your TV. You have installed your workstation: all you have to do is position your armchairs and your sofa at a good distance. Here is a table that tells you how far you can stand:

Screen Recoil distance
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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