How do you calculate the inches of a TV?
Screen size is a very important parameter when buying a TV. However, many people are not clear about how TV size is calculated, and even have misunderstandings. This article will explain in detail the calculation method of TV size, and attach the hot topics and hot content on the Internet in the past 10 days to help everyone better understand the science behind TV size.
1. Definition of TV size
The size of a TV usually refers to the diagonal length of the screen in inches (1 inch = 2.54 cm). For example, a 55-inch TV has a screen that measures 55 inches (approximately 139.7 cm) diagonally. It should be noted that TV size does not include the width of the bezel.
2. Calculation method of TV size
The formula for calculating TV size is as follows:
| parameters | Calculation formula |
|---|---|
| Diagonal length (inches) | √ (screen width² + screen height²) ÷ 2.54 |
For example, if the screen width of a TV is 121.8 cm and the height is 68.6 cm, then its diagonal length is:
| Calculation steps | result |
|---|---|
| √(121.8² + 68.6²) | √(14835.24 + 4705.96) = √19541.2 ≈ 139.8 cm |
| 139.8 ÷ 2.54 | ≈ 55 inches |
3. The relationship between TV size and viewing distance
Choosing the right TV size depends not only on personal preference, but also on viewing distance. Here is a comparison table of common viewing distances and recommended TV sizes:
| Viewing distance (meters) | Recommended TV size (inches) |
|---|---|
| 1.5-2.0 | 40-50 |
| 2.0-2.5 | 50-60 |
| 2.5-3.0 | 60-70 |
| 3.0 - 3.5 | 70-80 |
4. Hot topics and content on the entire network in the past 10 days
The following are the hot topics and hot content on the Internet regarding TV size and purchase in the past 10 days:
| hot topics | Hot content |
|---|---|
| "How to choose TV size?" | Experts recommend choosing the right size based on the size of your living room and viewing distance. |
| “Big screen TV becomes mainstream” | Data shows that TV sales of 65 inches and above account for more than 50%. |
| “OLED vs QLED” | Consumers pay more attention to picture quality and screen technology when purchasing TVs. |
| "TV size measurement misconceptions" | Many people mistakenly include the TV frame into the size, resulting in purchasing errors. |
5. Summary
Calculating TV size is not complicated, just remember the definition of diagonal length and unit conversion. When purchasing a TV, in addition to size, factors such as viewing distance, screen technology (such as OLED, QLED) and resolution (such as 4K, 8K) should also be considered. I hope this article can help you better understand how to calculate TV size and make an informed purchasing decision.
If you want to know more about TV purchasing, you can follow our follow-up articles or consult professionals directly.
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