You’ve probably noticed that TVs come in different sizes, and they are all measured in inches. You’ll find 70 inch tv, 50-inch TVs and 32 inch TVs on the market, and here’s how the screens are measured.

TV technology has advanced, and this has meant that there are various sizes to choose from. There are curved screens, with LCD technology and also LED, everything will depend on your tastes and needs.

Televisions have revolutionized the world of entertainment, and the first models had a traditional square screen, however, as they have evolved and with widescreen resolutions today the screens have other dimensions.

Televisions are measured in inches

The reason why TV screens are measured in inches is probably related to their origin. The first manufacturers were the Americans and the Japanese, and because of the units of length they use, the inch was standardized to measure all televisions.

The inch is a unit of length in the imperial and United States customary systems of measurement. Equal to 1/12 of a foot, it has been further subdivided into smaller units. It is surprising that this measure has remained over time, but it is probably because it has become an international standard.

Using inches as the unit of measurement not only made it easier to have the exact measurement of the screens, but also the work of manufacturing larger televisions as time went by.

With this in mind, we can say that televisions are measured in inches for historical and accuracy reasons.

Diagonal measurements

In addition to being measured in inches, they are also measured diagonally. The first televisions had an aspect ratio of 4:3, and required cathode ray tubes to project the image through their electrons.

This tube, since the appearance of the television, was installed in the device diagonally, so since its invention, manufacturers have used this reference to measure the screens.

Although current televisions no longer use cathode ray tubes, the diagonal length is still taken as a reference. Regardless of the TV, companies offer their sizes based on diagonal calculations.


Some professionals and experts in the field argue that TV screens are measured in this way for marketing and sales reasons. It is obvious that the diagonal measurement of the screen is greater than its width or height measurement, so they play with this measurement in inches to attract the customer thinking that they will get the biggest one.

Today televisions have evolved so that not all measures are standard, plus it is possible to get curved screens and other models that break with the basic measures we know. For this reason, it is recommended to also take into account the height and width measurements and above all, the space where you plan to install your TV.

Fortunately, many online stores have comparison charts that can recommend the ideal screen size for your space and your needs.


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