# How to find out how many inches the screen

### Method 2. Taking measurements

Give an answer to the question “how to find out how **many** inches the monitor is?” can be done in another SIMple and at the same time effective way. by measuring the distance from opposite vertices of the monitor screen (diagonally) with a ruler or tape measure.

In order to find out how **many** inches the monitor is, the figure obtained when measuring with a ruler or tape measure must be divided by 2.54.

Measuring the diagonal size of the monitor with a tape measure

For example, when measuring with a ruler diagonally, the screen size turned out to be 48.3 cm. We divide this figure by 2.54 and get 19.01. We round to the nearest one and get the number 19.

This means that our monitor is 19 “.

### By the method of mathematical solutions

For absolutely desperate geometry lovers, it is proposed to use the method of solving a SIMple problem. Here the well-known ancient Greek philosopher and mathematician Pythagoras comes to the rescue with his famous theorem. It says that the sum of the squares of the legs of a triangle is equal to the square of its hypotenuse. In our case, the legs will be the vertical and horizontal of the display, and the hypothesis is the value we are interested in. We make SIMple calculations. we square the width and height separately, add them up and extract the square root from the resulting number. If the ruler is graduated in millimeters, then we divide the result by 2.54 and get inches.

When applying rulers, tape measures, etc. to the display, be careful not to damage the matrix and its coating with sharp parts. Some screens are very fragile and leaving a scratch is easy.

The first method is the most correct and guarantees the absolute accuracy of the result. You will make a measurement with your own hands and, with a careful approach to the matter, an error will be excluded.

### Determining the diagonal from the model

In the name of the model, most monitors can also **find** out the exact diagonal or size of the display. Alas, this information is not indicated on the cases of some devices, the manufacturer could SIMply not attend to this.

In order to find out the screen size by monitor model, you need to view the necessary information on the device case.

### We measure with a ruler

The most commonplace way to find out exactly the screen diagonal is to SIMply measure it. Of course, this will require a fairly long ruler or other measuring tool. An ideal choice would be a ruler or tape measure with an inch scale, in which case you do not have to do any calculations after measurements, the resulting figure on the scale will mean the diagonal.

The display must be measured strictly obliquely (for example, from the lower left corner to the upper right).

## How to find out the diagonal of the monitor: 4 ways

Good day friends. Today, I will tell you how to find out the monitor diagonal in several ways that are accessible and understandable for everyone. On the one hand, this seems to be a trifling question, but on the other hand, personally, I have heard from my friends and acquaintances more than once about a request by determining the diagonal of a computer or laptop monitor. Therefore, I decided in this article to tell everything in more detail so that you do not have such questions anymore.

An important nuance! The size of the diagonal of the monitor is measured in inches only, remember this.

The very first way to determine the diagonal will be outrageously SIMple. And it consists in examining the documentation that comes with your monitor. Examine it carefully, and I can give you almost 100% guarantee that in addition to the model of the monitor itself, its diagonal will also be indicated.

If you bought the monitor in a used condition, or SIMply threw out the documentation for it, then we skip this step and go to the second point.

Method. In the most careful way, inspect the surface of your monitor, and especially its corners and the inscription in the middle of the lower bar, often the manufacturer marks its products and indicates the diagonal immediately after the letter designation in the form of 2-digits.

If there are no inscriptions on the front panel of the monitor or they are overwritten, then carefully inspect the back, there is almost always an information sticker.

Method. Go to Yandex.Market in the Computers. Monitors section and enter your monitor model in the search bar. We press the button Find and in the search results we look at the technical characteristics of the device.

Usually the type of monitor and its diagonal are in the first lines of the characteristics.

Method. In my opinion, the most reliable and time-tested method. If you do not have documentation for the monitor, there are no stickers and signs on the device itself, and Yandex.Market does not look for your model, the only 100% option to determine the diagonal of the monitor is to measure it, with a regular ruler or tape measure.

Take a ruler (more convenient with a tape measure) and from the lower left corner of the monitor, measure the distance to the upper right corner (and vice versa). Divide the result in centimeters by 2.54.

Important! Measurement only needs to be carried out on the monitor screen itself (without a rim).

A ruler from the lower left corner to the upper right. it will show in centimeters, if you need in inches, then just divide the centimeters by 2.54, since 1 inch = 2.54 cm.

For example, I got it like this:

Diagonal in centimeters = 58

In inches. 58 / 2.54 = 22.83, that is, my 23 **inches**.

That’s all friends. You already know for sure how to find out the diagonal of the monitor, so share information with other users, you need to help everyone.

Everything, until new interesting meetings.

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### Specialized programs

Specialized programs. Find out the diagonal of the computer monitor without resorting to the rulers, AIDA64, SiSoft Sandra and SIMilar tools will help the diagnostic program. Going to the “Display” section (the name may differ for different software. we are looking for the most appropriate item in the program menu) where the desired parameter will be opposite the “Monitor” line. The program takes a value from its own database, so if the data is displayed incorrectly or will not be displayed at all, we recommend using a newer version.

### Manual measurement

A SIMple method that requires any measuring tool from you. ruler, tape measure, tape centimeter.

- Attach the ruler origin to any bottom corner of the screen. Pull it to the opposite top corner (left to right or right to left) and read the number in centimeters.

You have learned several easy methods for determining the diagonal of a laptop or computer screen. As you can see, this is easy to do even in the absence of technical data and the Internet. This knowledge can be useful both for determining the diagonal of your device, and when choosing a used device, where you should not rely on the information provided by the seller, but scrupulously check everything yourself.

We are glad that we were able to help you solve the problem. Ask your question in the comments, detailing the essence of the problem. Our experts will try to answer as quickly as possible.

### Google help

Not necessarily Google, of course, but using a search engine, you can go to the website of the manufacturer of the equipment, where in the section of products manufactured by the company choose your model and see what’s what.

## How to find out the diagonal of the monitor, how the size is measured

The **screen** size directly depends on the diagonal of the monitor, the higher it is, the larger the device has. This value is measured exclusively in inches (by no means in centimeters), the most popular diagonal for stationary PCs is 22-24 **inches**. Laptops have significantly smaller display sizes, averaging 15-17 inches.

You can find out the exact size of your monitor or other screen in several ways: read the documentation for the device, determine it by the device model, find out the necessary information on the Internet, or SIMply measure the display with a ruler, tape measure or other measuring instrument.

### Manual diagonal measurement

- Take a ruler, tape measure, or measuring tape.
- Measure the distance between the upper left and lower right corners of the monitor.
- Convert the value in centimeters to inches.

Note that you need to measure the visible area of the screen. And we do not take into account the size of the case in the calculations.

### How to find out the diagonal of the monitor using the documentation

All parameters of the device are most likely indicated in its technical passport. And all the information you need should be found in the section devoted to technical characteristics.

## Why exactly the diagonal and why exactly in inches

Measurement units are usually set by the manufacturer. And since the developers of monitors are Western firms, they traditionally use **inches** as a unit of measurement.

And for conversion use the formula: cm = inches ⋅ 2.54. So, the diagonal of the monitor 24 ″ is 60.96 cm (24 ⋅ 2.54).

In addition, regardless of size, there is a concept of “aspect ratio”. And the most popular are monitors with the following aspect ratios:

- 4: 3. “square” displays. These are the descendants of televisions and CRT monitors. They are widely used for office work, and are also suitable for typing documents;
- 16: 9. rectangular universal monitors. They demonstrate the best choice for watching widescreen video. And possibly to work with game content type.

And to make it easier to imagine, we have given in the table a comparison of sizes in inches and centimeters:

16: 9 (Wide)

4: 3 (Standard)

Diagonal

Height

Width

Height

Width

## How to **find** out the diagonal of a computer monitor

There are several common reasons for determining the size:

## How to find out the diagonal of the monitor

Probably **many** will agree that when choosing a monitor, one of the important parameters is the diagonal. And as you know, this is the distance between opposite corners. In our case, the corners of the computer screen. But manufacturers may sometimes mislead buyers. For example, when they indicate this value along with the body, and not just the dimensions of the visible part. And this is especially critical when choosing portable equipment. We will tell you about ways to help you find out the diagonal of your laptop or computer screen. And also double-check the manufacturer’s information.

### Search engine (Google for help)

But on the manufacturer’s website, the numbers must be accurate. But they do not always have a Russian-language interface. And when measuring parameters, different methods can be applied. In addition, manufacturers can indicate the diagonal of the screen, taking into account the case, passing it off as the size of the visible area.

### How to find out the diagonal of the monitor using mathematical solutions

Now is the time to remember geometry. And as we all know from the Pythagorean theorem, the square of the hypotenuse is equal to the sum of the squares of the legs. In our case, the diagonal of the monitor will be the hypotenuse. And the legs are the width and height of the matrix. Therefore, we square the vertical and horizontal of the screen. And then we summarize them. And to calculate the diagonal, we extract the root from the obtained value.

For example: Our monitor measures 10.5 ″ × 19 ″. We recognize the square of its hypotenuse: 10.5² 19² = 110.25 361 = 471.25. Now we calculate the diagonal itself: √471.25 = 21.7 ″.

This method is most likely the most accurate. It allows you to find out the real dimensions of the visible part of the screen. And pay attention. measure only the matrix, i.e., the display excluding the case.

### Other measuring methods

There are several more exotic ways to measure the screen diagonal.

- comparison with the standard. take for comparison an object whose dimensions you already know;
- laser rangefinder. it will determine the dimensions with an accuracy of a fraction of a millimeter;
- curvimeter. here, to measure the distance, slide the wheel over the surface to be measured. But be careful. it can damage the matrix.

### Using special programs

For this purpose, you can use:

- AIDA64,
- HWMonitor,
- SiSoft Sandra.

In any of these programs, find the item “Monitor”, “Displays” or the like among the list of equipment. And then among the parameters **find** the item “Resolution”.

The software takes this item from its database. So the information may not correspond to reality. Because your monitor may not be in the program database.

## Laptop Information

All laptops have technical decals. Look carefully, perhaps the screen diagonal is indicated there. What are the options? 10.1, 11.6, 12, 14 inches, etc. For example, 17.3 inches is almost 50 centimeters, because 1 inch = 2.54 cm.In order not to suffer from converting inches to centimeters and vice versa, use the table:

If there is no information on the screen size on the laptop case, try to find out its diagonal from the documents that were in the box when you bought the laptop. By the way, the physical size of the display is almost always written on the box itself, so if you haven’t thrown it away, you will easily find the information you need.

## Laptop Information

All laptops have technical decals. Look carefully, perhaps the screen diagonal is indicated there. What are the options? 10.1, 11.6, 12, 14 inches, etc. For example, 17.3 inches is almost 50 centimeters, because 1 inch = 2.54 cm.In order not to suffer from converting inches to centimeters and vice versa, use the table:

If there is no information on the screen size on the laptop case, try to find out its diagonal from the documents that were in the box when you bought the laptop. By the way, the physical size of the display is almost always written on the box itself, so if you haven’t thrown it away, you will easily find the information you need.

## Using the AIDA64 program

If you can’t find a ruler at home, you can use the software. Install the AIDA64 program on the laptop. This program scans the computer and displays all technical specifications, including the display diagonal. AIDA64 is a paid utility, but demo access is available for 30 days. A month is definitely enough to do the following:

- Start AIDA64. Go to the “Display” tab and select “Monitor”.
- In the line “Monitor Type” look at the size in
**inches**.

The window will also contain a number of useful information: aspect ratio, maximum resolution, frame rate, even the release date. Therefore, in terms of information content, there is nothing better than AIDA64.

Good day!

In general, I would like to note right away that questions about the diagonal are quite popular: both when choosing and buying a new laptop or monitor, and when solving various problems with an existing device (for example, if you need to set the correct **screen** resolution).

Note: by the way, the image quality on the screen does not directly depend on the size of the diagonal! I have noticed many times myself how a 13 “laptop gives a much better picture than a device with a 15.6” screen (which generally has a “grainy” picture). And all this can result in eye fatigue (for example).

My advice: first of all, when choosing a screen, focus on the picture quality (and then on the diagonal).

## Methods for determining the diagonal

To begin with, I want to demonstrate on the **screen** below what is meant by the diagonal: this is the distance between opposite corners of the screen (for example, between the lower left and upper right). Note that the size of the diagonal does not include the “non-working” parts of the screen (ie plastic rims around the edges). you need to measure only the part where the image is shown!

What is the diagonal, how to measure it

Important! Below are the most common laptop sizes.

11 **inches** = 27.94 cm.

15.6 in = 39.624 cm.

17 inches = 43.18 cm.

19 **inches** = 48.26 cm.

visual (manual)

The way that suggests itself is to take a tape measure, measuring tape or ruler and measure (important: be careful with the metal parts of the tape measure or tape. they can scratch the surface of the screen).

Divide the resulting number by 2.54. this will be the diagonal in inches of your device (this is what is indicated on all monitors sold).

Calculation on a smartphone calculator

By the way, some laptops and monitors have stickers with all of their most significant characteristics. Here in the photo below, for example, an ACER laptop is shown: the sticker shows not only the diagonal, but also the amount of RAM, video card, processor, OS, etc.

Classic ACER laptop case

using documents

Laptop characteristics // page from the documents supplied with the device

with the help of specials. utilities

One of the most famous utilities for viewing PC characteristics is AIDA-64 (it once replaced Everest). I recommend using it (the link to it is given below).

After installing and running the utility. just open the “Display / Monitor” section: in the “Monitor type” and “Max. Viewable area” tabs you will find out the screen diagonal, its length and width in mm.

13.3 inch screen on laptop

There are a lot of utilities for viewing characteristics now. I would recommend paying first of all to these (there is also AIDA-64): https://ocomp.info/harakteristiki-kompyutera.html#Aida_Speccy

for official manufacturer’s website

If you know the exact model of a laptop or monitor, then on the Internet on the official website of the device manufacturer you can find out all the ins and outs about it (sometimes you can even download special utilities there to fine-tune the device).

The lineup of Dell laptops (screen from the official website of the manufacturer)

However, I will note once again that it is necessary to know not just the model of the device, but its exact modification. You can find it out:

- in the same spec. utilities (AIDA, Everest, Astra, etc.);
- on the stickers on the device case (look at the back of the monitor, laptop);
- in his documents (passport).

details on how to find out the exact modification of a laptop can be found here: https://ocomp.info/kak-uznat-model-noutbuka.html

That’s all for me, for the additions. a separate merci!

To find out the diagonal of a laptop screen, look at its technical specifications on the Internet, measure the display with a tape measure and convert centimeters to inches, or use the capabilities of the AIDA64 program.

## How to find out how **many** inches the monitor is on a laptop

To **find** out the diagonal of a laptop screen, look at its technical specifications on the Internet, measure the display with a tape measure and convert centimeters to inches, or use the capabilities of the AIDA64 program.

## Manual measurement

If you do not know the model of the laptop, and there are no identification marks or stickers on the case, then try measuring the diagonal manually. You will need a long ruler, tape measure or meter. If using a tape measure, do not press it against the display to avoid accidentally damaging the screen.

## Manual measurement

If you do not know the model of the laptop, and there are no identification inscriptions or stickers on the case, then try to measure the diagonal manually. You will need a long ruler, tape measure or meter. If using a tape measure, do not press it against the display to avoid accidentally damaging the screen.

## Using the AIDA64 program

If you can’t find a ruler at home, you can use software tools. Install the AIDA64 program on the laptop. This program scans the computer and displays all technical specifications, including the display diagonal. AIDA64 is a paid utility, but demo access is available for 30 days. A month is definitely enough to complete the following steps:

- Start AIDA64. Go to the “Display” tab and select “Monitor”.
- In the line “Monitor Type” look at the size in inches.

The window will contain a number of other useful information: aspect ratio, maximum resolution, frame rate, even the release date. Therefore, in terms of information content, there is nothing better than AIDA64.

### Third Party Programs

There are many programs that provide detailed technical information about the device. The most popular and informative is AIDA64, which displays information about the screen as well. This program has a 30-day trial period, which is more than enough to find the answer to the question posed.

- Install the program and run it.
- Expand the “Display” tab and go to the “Monitor” subsection.

On the right, find the line “Monitor type” and the number that will be indicated opposite the heading means the screen diagonal in inches.

If the software version of the definition is not your case, go to the next.

## Methods for determining the diagonal

To begin with, I want to demonstrate on the screen below what is meant by the diagonal: this is the distance between opposite corners of the screen (for example, between the lower left and upper right). Note that the size of the diagonal does not include the “non-working” parts of the screen (ie, plastic rims around the edges). you only need to measure the part where the image is shown!

What is the diagonal, how to measure it

Important! Below are the most common laptop sizes.

11 inches = 27.94 cm.

15.6 in = 39.624 cm.

17 inches = 43.18 cm.

19 inches = 48.26 cm.

visual (manual)

The way that suggests itself is to take a tape measure, measuring tape or ruler and measure (important: be careful with the metal parts of the tape measure or tape. they can scratch the surface of the screen).

Divide the resulting number by 2.54. this will be the diagonal in inches of your device (this is what is indicated on all monitors sold).

Calculation on a smartphone calculator

By the way, some laptops and monitors have stickers with all of their most significant characteristics. Here in the photo below, for example, an ACER laptop is shown: the sticker shows not only the diagonal, but also the amount of RAM, video card, processor, OS, etc.

Classic ACER laptop case

using documents

Laptop characteristics // page from the documents supplied with the device

with the help of specials. utilities

One of the most famous utilities for viewing PC characteristics is AIDA-64 (it once replaced Everest). I recommend using it (the link to it is given below).

After installing and running the utility. just open the “Display / Monitor” section: in the “Monitor type” and “Max. Viewable area” tabs you will **find** out the screen diagonal, its length and width in mm.

13.3 inch screen on laptop

There are a lot of utilities for viewing characteristics now. I would recommend paying first of all to these (there is also AIDA-64): https://ocomp.info/harakteristiki-kompyutera.html#Aida_Speccy

for official manufacturer’s website

If you know the exact model of a laptop or monitor, then on the Internet on the official website of the device manufacturer you can find out all the ins and outs about it (sometimes you can even download special utilities there to fine-tune the device).

The lineup of Dell laptops (screen from the official website of the manufacturer)

However, I will note once again that it is necessary to know not just the model of the device, but its exact modification. You can find it out:

- in the same spec. utilities (AIDA, Everest, Astra, etc.);
- on the stickers on the device case (look at the back of the monitor, laptop);
- in his documents (passport).

details on how to find out the exact modification of a laptop can be found here: https://ocomp.info/kak-uznat-model-noutbuka.html

That’s all for me, for the additions. a separate merci!

To find out the diagonal of a laptop screen, look at its technical specifications on the Internet, measure the display with a tape measure and convert centimeters to inches, or use the capabilities of the AIDA64 program.

## How to find out how **many** inches a laptop **screen**

Good day!

In general, I would like to note right away that questions about the diagonal are quite popular: both when choosing and buying a new laptop or monitor, and when solving various problems with an existing device (for example, if you need to set the correct screen resolution).

Note: by the way, the image quality on the screen does not directly depend on the size of the diagonal! I have noticed **many** times myself how a 13 “laptop gives a much better picture than a device with a 15.6” screen (which generally has a “grainy” picture). And all this can result in eye fatigue (for example).

My advice: first of all, when choosing a screen, focus on the picture quality (and then on the diagonal).

## Manual measurement

If you do not know the model of the laptop, and there are no identification inscriptions or stickers on the case, then try to measure the diagonal manually. You will need a long ruler, tape measure or meter. If using a tape measure, do not press it against the display to avoid accidentally damaging the **screen**.

## Laptop Information

All laptops have technical decals. Look carefully, perhaps the screen diagonal is indicated there. What are the options? 10.1, 11.6, 12, 14 inches, etc. For example, 17.3 inches is almost 50 centimeters, because 1 inch = 2.54 cm.In order not to suffer from converting inches to centimeters and vice versa, use the table:

If there is no information on the screen size on the laptop case, try to find out its diagonal from the documents that were in the box when you bought the laptop. By the way, the physical size of the display is almost always written on the box itself, so if you haven’t thrown it away, you will easily find the information you need.

## Using the AIDA64 program

If you can’t find a ruler at home, you can use software tools. Install the AIDA64 program on the laptop. This program scans the computer and displays all technical specifications, including the display diagonal. AIDA64 is a paid utility, but demo access is available for 30 days. A month is definitely enough to complete the following steps:

- Start AIDA64. Go to the “Display” tab and select “Monitor”.
- In the line “Monitor Type” look at the size in inches.

The window will also contain a number of useful information: aspect ratio, maximum resolution, frame rate, even the release date. Therefore, in terms of information content, there is nothing better than AIDA64.

In certain situations, the user may need information about the diagonal of the screen in a laptop or PC monitor. Since not everyone is able to determine it by eye, despite the presence of standards in the dimensional grid, it remains to resort to alternative solutions to this issue.

## Find out the diagonal of the laptop screen

There are several ways to determine the diagonal at once, allowing you to quickly find out the information you need. First, let’s list those that require the minimum amount of effort and time from the user.

- The easiest way to do this is to find a sticker on the device body. This is usually where basic information is located, including screen size.

Users who do not know the laptop model can **find** technical documentation or the packaging of the device. they always indicate the data of interest regarding the purchased laptop model.

In a situation where all these methods cannot be used, we suggest that you familiarize yourself with two other options, more complex but effective.

### Manual measurement

A SIMple method that requires any measuring tool from you. ruler, tape measure, tape centimeter.

- Attach the ruler origin to any bottom corner of the screen. Pull it to the opposite top corner (left to right or right to left) and read the number in centimeters.

You have learned several easy methods for determining the diagonal of a laptop or computer screen. As you can see, this is easy to do even in the absence of technical data and the Internet. This knowledge can be useful both for determining the diagonal of your device, and when choosing a used device, where you should not rely on the information provided by the seller, but scrupulously check everything yourself.

Thank the author, share the article on social networks.

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