What is an inch? What is 1 inch?

Content:

• 1 What is the difference between an inch and a centimeter
• 2 TV diagonal in cm and inches, correspondence table
• 3 What to look for when choosing a TV diagonal?

The first thing TV buyers pay attention to is the screen diagonal. However, many consumers mistakenly understand this term as the total size of the entire liquid crystal panel, including the frame.

In fact, the diagonal refers to the size of the visible part of the display matrix. In the international market, this parameter is traditionally indicated in inches. Because of this, a Russian person, accustomed to a slightly different measurement system, has to find out in advance the sizes of televisions depending on the diagonal - the length and width of the screen in centimeters.

Inch in centimeters, millimeters: how much is it?

To convert inches to centimeters, you need to remember that one inch is 2.54 cm or 25.4 mm. The number is not that big, you can remember it or write it down somewhere.

One inch is 2.54 centimeters

Sometimes numbers just don’t want to stay in memory. Pictures can help, or you can try to imagine something that size. Probably everyone knows the fairy tale about Thumbelina. So, this fairy-tale character was one inch tall, that is, a little more than two and a half centimeters. Maybe it will help someone remember.

What is the difference between an inch and a centimeter

According to Wikipedia, an inch is a non-metric unit of length or distance. Currently, this unit of measurement is understood as the so-called English inch, widely used in the USA. According to the general rule

1 inch equals 2.54 centimeters.

In turn, a centimeter is a unit of measurement that has become widespread in various metric systems of measures. Currently, 1 centimeter is equal to 0.01 meters.

In fact, any first grader can convert the diagonal of a TV from inches to centimeters and back. All you have to do is multiply the number of inches by 2.5 to get centimeters. If we need to convert centimeters to inches, we simply divide the number by 2.54.

To make it easier to understand the ratio of screen diagonal, width and height, a special summary table has been developed. Calculations were made for screens with an aspect ratio of 16:9, which is the generally accepted global standard.

Units of length: inch and centimeter

An inch (abbreviated ″) is a unit of length in the British Imperial System, the official system of weights and measures adopted in the British Empire.

In almost all countries where the imperial system of measures was in use, it was replaced by the metric system. However, imperial units are still widely used in Great Britain, Canada, some other countries that are members of the British Commonwealth, and also in the United States.

1 inch is exactly equal to 25.4 mm or 2.54 cm.

A centimeter (cm) is a unit of length in the metric system of measures, which in its modern version is called the International System of Units (SI).

The basic unit of length in the SI system is the meter. The prefix "centi" means "one hundredth". 1 centimeter is equal to 0.01 meters.

1 centimeter is approximately equal to 0.3937 inches.

Converting inches to centimeters (cm) is a simple task. You just need to remember that 1 inch is 2.54 cm

First, let's talk about how these inches are designated. In English it is inch. If there are a lot of them (inches), they write inches. In the abbreviated version, only the first two letters in are used. This appears in the text. There is also a graphic image - these are two lines at the top next to the number. For example: 3″, 5.2″. It reads 3 inches, five and two inches.

TV diagonal in cm and inches, correspondence table

In the table below, the dimensions are for the screen itself only. In order to find out the dimensions of the entire device, you will also need to measure the thickness of the frame. For most modern devices it does not exceed a few centimeters.

How to convert inch to centimeters

To convert inches to centimeters, you need to multiply them (inches) by 2.54. For example, you need to find out

• 2 inches is how many centimeters: 2″ * 2.54 cm = 5.08 cm.

We act similarly with any other value:

• 7 inches is 7″ * 2.54 cm = 17.78 cm;
• three inches = 3″ * 2.54 cm = 7.62 cm;
• 50 inches in centimeters is 50″ * 2.54 cm = 127 cm or 1 meter and 27 cm.

To convert inches to centimeters, use the table below.

What to look for when choosing a TV diagonal?

As practice shows, a large TV screen is not always convenient and comfortable. It’s not enough to buy a 102-inch diagonal TV; you need to correctly correlate the size of the display and factors such as:

1. room sizes – for small rooms, 19-20-inch monitors are sufficient;
2. distance from the screen to the viewer - traditionally, the viewing distance is calculated as 3-4 diagonals of the TV;
3. ratio of diagonal to screen resolution - the smaller the diagonal, the lower the resolution and vice versa. If this condition is not met, the picture may disintegrate into individual pixels, which significantly reduces viewing comfort.

Essentially, today there are two options for choosing the optimal screen diagonal. The first is that based on the area of ​​the room, the location of the TV viewer and the operating features (watching news programs, DVD recordings, etc.), the maximum allowable diagonal of the TV is selected. Second, taking into account the desired screen diagonal, the location for installing the TV and the place for viewers is selected. Practice shows that for standard apartments the ideal solution is a TV with a diagonal of 32 - 40 inches.

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What to look for when choosing a 55-inch TV in 2021?

When choosing a 55-inch TV in 2021, it is recommended to pay attention to the following parameters:

• Screen resolution . Since the diagonal is large, the resolution must be appropriate. The best models are 4K (3849x2160), which can be viewed up close. However, now there are very few TV channels transmitting a signal in this quality. Therefore, a model with a resolution of 1920×1080 is suitable for standard viewing.
• Dimensions . Specific dimensions depend on the design of the TV, but the general dimensions are the same for all 55-inch models. To determine the required space, you need to add another 10 cm on each side to the values ​​​​indicated on the box.
• Sound . Inexpensive models are equipped with simple two-channel stereo sound of average quality. More advanced TVs boast a surround system, support for Dolby Atmos codecs, and built-in subwoofers.
• Image characteristics . Here we consider the brightness and contrast indicators. The brightness should be sufficient for comfortable viewing even when sunlight penetrates into the room.
• Viewing angle . Affects whether the image on the screen can be seen from different points in the room without distortion. The higher the better.
• Smart TV . A popular option for which televisions are often purchased. Allows you to connect the device to the Internet and significantly expand its capabilities through special applications.

The final choice depends on the specifics of the room, as well as the requirements of the individual user. It is better to make a list of the necessary options in advance, and then start selecting the most suitable options.

How do you measure the diagonal of a smartphone?

If you haven’t lived your whole life in a village, then the essence of the diagonal should be clear to you. In fact, the diagonal shows the distance measured from one corner of the screen to the opposite. In the technical specifications, this parameter is indicated in inches - this has been the case since the days of “pot-bellied” TVs.

It should be noted that different smartphones with the same screen diagonal may have different heights and widths. The fact is that the size of the device is influenced by two other factors:

• Side frames - if they are narrow, then the width of the gadget will be relatively small. And narrow or completely absent side frames make managing the operating system and applications more convenient.
• Aspect ratio - the width of the device also depends on it. Tablets most often use a display with an aspect ratio of 5:4. On smartphones, the most popular settings are 16:9 and 18:9. In the second case, the device turns out to be narrow and ideal for simultaneously displaying two applications.

If you look at old smartphones, you will notice that they have a small screen (3.5 inches was the most popular diagonal), but huge bezels around it. Now technology has reached the point where the side frames can be quite narrow. And in the future, many smartphones will not have them at all (similar models still exist, but their number is very small). In short, from now on engineers have the opportunity to build fairly large LCD panels into relatively compact gadgets. This makes smartphones more versatile. They become more convenient for watching movies and spending free time playing games.