When it comes to buying a TV the first thing you must decide on is the size, generally bigger sizes are preferred for obvious reasons but depending on the use and placement of your TV you might opt for a smaller size. This is why all manufacturers offer a range of sizes and no single size has ever been considered a standard or mainstream size in the industry.
If you’re here, you have already decided or are considering buying a 20-inch TV but before we go into visualizing how big a 20 inch TV exactly and its dimensions. We will also discuss some important things you must know before buying a 20-inch TV.
How to Choose The Right TV Screen Size
Picking the right screen size for your TV is more than a matter of bigger being better. If a screen is too big and you sit too close to it, you’re going to suffer from eye strain, or simply not be able to see the whole picture. It’s important to get a TV that’s the right size for your space.
Now, this is a question of comfort, and it can involve a lot of personal taste as well. Because of this, there isn’t a single, hard rule about screen size. Instead, there are several very similar but not identical rules, with different outlets and companies all maintaining their own general guidelines. RTings.com, Tom’s Guide, and even Samsung have their own varying formulas for calculating screen size based on the distance you’ll be sitting from your TV. On top of that, you might simply be more comfortable with a larger or smaller screen at your preferred viewing distance.
You might also want to check the best TVs under $300.
The aspect ratio of a television is the ratio of its width to its height. Currently, the most common aspect ratio on televisions is 16: 9. This means that for every 9 units of height we have 16 units of width. Alternatively, it can be said that the width is 1.78 times the height.
A few years ago the standard aspect ratio of the vast majority of televisions was 4: 3. That is, the width was 1.33 times the height. This format has been outdated today since most programs are broadcast with high definition and a 16: 9 aspect ratio.
The size of a television screen is usually defined by the length of its diagonal. Instead of indicating its height and width, only the value of its diagonal is indicated in inches. This can be transformed to centimeters since one inch equals 2.54 cm.
If we know the diagonal length of a screen and its aspect ratio (which can usually be assumed equal to 16: 9), it is possible to calculate its width and height.
The inches of television and its resolution are not necessarily related. More inches only mean that the TV is bigger, but not that it has more resolution. For example, a 65-inch 4K TV and a 75-inch 4K TV have the same number of pixels, and therefore the same resolution. The only difference between these two TVs is the pixel size.
TV dimensions length and width
Many people are interested in what screen size the TV will have depending on the diagonal since the diagonal does not give much information, also, we used to use the old TV standards, with the size of the TV with an aspect ratio of 3 × 4. But now this standard is a thing of the past, and all new TVs are available in the standard with an aspect ratio of 16 × 9.
For our understanding let’s look at monitors, monitors have other aspect ratios in addition to these, the most common monitor size is 21: 9.
So, the 21: 9 standard is quite popular, 21: 9 resolution monitors are shorter in height but wider, for example, a 26-inch monitor will be 2.5 inches in size. (6.4 cm) smaller than 16: 9 monitors; they are more suitable for tables like excel. When selecting a TV or monitor, keep in mind that the actual size of the TV will be 0.5-1.5 inches. (1-4 cm) larger due to the frame that supports the screen.
20 Inch TV Size
To know the measurements of a 20-inch television we must know the aspect ratio of the screen.
The aspect ratio can be known from the characteristics of television. Today’s televisions with HD, Full HD, and Ultra HD (also known as UHD or 4K) resolutions generally have a 16: 9 aspect ratio.
Older TVs with standard SD (Standard Definition) resolution have a 4: 3 aspect ratio. However, this type of format has been abandoned to make way for high definition with a 16: 9 aspect ratio.
The following table states the dimensions of a 20 Inch TV:
Dimensions in cm
Dimensions in mm
Dimensions in inches
20 Inch TV dimensions in cm
The 20 inches refers to the length of the diagonal of the screen. If we express this length in centimeters, it is equivalent to 50.8 cm.
Assuming the aspect ratio is 16: 9, then the width of the screen is 44.3 cm and the height is 24.9 cm, as shown below.
A few years ago, before the introduction of high-definition displays (HD, Full HD, and Ultra HD), the most common televisions had an aspect ratio of 4: 3. That is, the width was 1.33 times the height.
With this aspect ratio, a 20-inch TV would equal 40.6 cm in width and 30.5 cm in height as shown in the following image. Even so, today it is rare to find this type of television with a high number of inches.
20 Inch TV dimensions in mm
The 20 inches refers to the length of the diagonal of the screen. If we express this length in millimeters, it is equivalent to 508 mm.
Assuming the aspect ratio is 16: 9, then the width of the screen is 443 mm and the height is 249 mm, as shown below.
With an aspect ratio of 4: 3, a 20-inch TV would equal 406 mm in width and 305 mm in height as shown in the following image. Even so, today it is rare to find this type of television with a high number of inches.
20 Inch TV dimensions in Inches
The 20 inches refers to the length of the diagonal of the screen.
Assuming the aspect ratio is 16: 9, then the width of the screen is “17.4 in” and the height is “9.8 in”, as shown below.
With an aspect ratio of 4: 3, a 20-inch TV would equal “15.9 in” in width and “12 in” in height as shown in the following image. Even so, today it is rare to find this type of television with a high number of inches.
These measurements indicate the dimensions of the screen only. Keep in mind that the total size of the TV will be slightly larger due to the frame that supports the screen. In addition, the depth of the television must be taken into account, which may vary depending on the model.
Hope this article answered all your queries!