How to calculate TV size
With the advancement of technology, there are more and more types and sizes of TVs, and consumers are often confused when choosing one. How is TV size calculated? How to choose the TV size that suits you? This article will give you detailed answers.
1. Definition of TV size
TV size 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 diagonal length of 55 inches (approximately 139.7 cm).
2. Calculation method of TV size
The formula for calculating TV size is as follows:
| parameters | Calculation formula |
|---|---|
| Screen diagonal length (inches) | √(screen width² + screen height²) ÷ 2.54 |
| Screen width (cm) | Diagonal length × width ratio in screen aspect ratio × 2.54 |
| Screen height (cm) | Diagonal length × Height ratio in screen aspect ratio × 2.54 |
3. Common TV size comparison table
The following are common TV sizes and their corresponding screen width and height (taking a 16:9 aspect ratio as an example):
| TV size (inches) | Screen width (cm) | Screen height (cm) |
|---|---|---|
| 32 | 70.8 | 39.8 |
| 43 | 95.2 | 53.5 |
| 55 | 121.8 | 68.5 |
| 65 | 143.9 | 80.9 |
| 75 | 166.0 | 93.3 |
4. How to choose the right TV size
When choosing a TV size, consider the following factors:
1.viewing distance: Generally speaking, the viewing distance is directly proportional to the TV size. Here is a reference table:
| 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 |
| 3.0-4.0 | 70-85 |
2.room size: Smaller rooms are suitable for smaller TVs, larger living rooms or theater rooms can choose larger TVs.
3.resolution: High-resolution TVs (such as 4K, 8K) can be viewed at a closer distance without feeling pixel grainy.
5. Common misunderstandings about TV size
1.Whether the border is included in the size: TV size only refers to the diagonal length of the screen, excluding bezels.
2.Size differences between brands: Even if the nominal sizes of TVs from different brands are the same, there may be slight differences in the actual screen size.
3.Effect of aspect ratio: The traditional TV aspect ratio is 4:3, while modern TVs are mostly 16:9 or wider, which will affect the actual width and height of the screen.
6. Summary
The calculation and selection of TV size is not complicated. You only need to master the definition of diagonal length and combine factors such as viewing distance, room size and resolution to choose the TV that best suits you. Hope this article can provide you with valuable reference.
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