Lg 4k TV 42 Inch That’s How Much

The diagonal of the TV plays a big role when choosing a television receiver. The convenience of viewing on the screen depends on the correct choice of screen size. And the assertion that the larger the TV diagonal in cm, the better, is completely incorrect.

How much will it be if you convert 1 inch to cm? As known 1 inch equals 2.54 centimeters. Inch (from the Netherlands. Duim. thumb). the name for the unit of distance in European non-metric systems. Today, an inch is most often understood as an English inch equal to 2.54 cm.

  • 1 inch = 2.54 cm = 25.4 mm
  • 1 cm = 0.3937 inch
  • 1 m = 39.37 inches

In the English system of measures 1 inch = 12 lines = 72 points = 1/12 feet = 1/36 yards.

Following the adoption of the international SI system of units, inches are considered an obsolete designation that should be phased out. But, despite this, inches continue to be used in technology when specifying calibers and form factors, for compatibility with long-established technical solutions. In this case, a double stroke (quotation mark) is used as an inch sign “)

In television technology, the screen diagonal is expressed in inches, which is measured as the distance between the opposite corners of the matrix. For example, 37″ means a screen with a diagonal of 37 inches or 37×2.54 = 93.98 cm.

A simple length converter for converting inches to centimeters and cm to inches:

For example, if you take a 32-inch TV, how much will it be in cm? Using the calculations in the converter, we get that 32 inches in centimeters will be 81.3. Another example, we translate 22 inches in cm, we get 55.9 centimeters. And if you take the diagonal of 42 inches, we get 106.7 centimeters.

TV diagonal in cm and inches, conversion chart:

How to choose the diagonal size

Two factors influence the choice of TV diagonal:

  1. the distance from which you will watch a television receiver;
  2. resolution of the picture displayed on the screen.

And this resolution of the picture depends both on the screen you purchased the device, and on the signal supplied to the input of the TV.

In the picture you see how to measure the diagonal of the TV.

You can check it yourself when choosing a television receiver. If you look closely at a picture with low quality, for example, terrestrial television, you can notice all the shortcomings of both the image and the processing circuitry. And if you step back a little, small errors will become invisible.

For example, if you take a 32-inch television receiver, then for a signal with 625 lines (terrestrial television), the distance to the screen will be about three diagonals 32×3 = 96 inches or 96×2.54 = 243 centimeters, which is approximately equal to 2.5 meters. And if the image resolution corresponds to 720p, then the distance to the screen for normal viewing will be 1.9 meters or more. If the TV is already Full-HD, then viewing the image will be convenient from a distance of 1.3 meters or more. It turned out the minimum distance to the screen, when viewed from which it will not be visible in the picture of distortion due to the structure of the signal.

For example, if you have a viewing distance of approximately 2.2 meters, then buying an HD Ready TV you can choose a device with a diagonal of up to 37 inches. If you choose a Full-HD TV, you can increase the diagonal to 52 inches without sacrificing picture quality. And new models with a resolution of 4K (Ultra HD), with a conversion module up to UHD resolution, will already be more than 60 inches at this viewing distance.

For example, one of these TVs: Samsung UE-65NU7400.

Diagonal of 65 inches, 4K resolution, there is an upscaling module that increases the resolution of any to 4K.

Lg 4k TV 42 Inch Thats How Much


But when viewing from a distance that exceeds the estimated, a large difference between TVs with different resolutions will not be visible. Do not forget that the resolution of the device itself must correspond to the signal for the highest quality playback. Therefore, when today almost all Full HD TVs and even models with Ultra HD resolution appear (4 times more than Full HD), then you need to take into account the number of pixels in the signal.

Terrestrial television so far has an SD resolution (625 lines). But digital television is spreading more and more, and there you need to find out the resolution additionally, but it will be more than SD. There are many films with Full HD quality, but there is still very little content with Ultra HD. You can advise for today all calculations to be carried out under the condition that you watch a with Full HD quality, and you will get a minimum viewing distance. And if you need to increase the distance, for example, installing a TV in the living room, then you will not see any damage to the quality of the picture.

An example of a modern (2018) TV with Full HD resolution: LG 43LK5900.


TV diagonal in cm table

The minimum distance for watching TV and the size of the diagonal of the screen can be associated with such a table:

The diagonals of the TVs are presented in inches and centimeters, the table makes it possible to select the third in two parameters. In the table, select the horizontal diagonal size of the screen, vertically select the resolution on the screen (it depends on the TV and the input signal), and at the intersection of these values ​​there will be the desired viewing distance in meters.

A signal with a quality of 720p can be issued by satellite television programs, games from consoles, copies of BD discs, digital TV.

1080p resolution corresponds to Full-HD TVs and it is better to use such devices if you have sources of such a signal. Although there are circuit solutions to increase the resolution of the signal to 1080p, but such schemes do not always work perfectly. Everything needs to be checked on site.

Therefore, it is better to determine the distance to the screen in advance and, accordingly, select the desired resolution and TV diagonal in cm for comfortable viewing.