How to measure monitor size

The size of the monitor screen is an essential step when you are choosing a computer. For most computers, there are a lot of sizes available that range between 13 and 43 inches. People can also use their television as a monitor and have screen sizes of 84 inches or greater. So, when you are shopping for monitors, you need to know how to measure monitor size. Then, you can save your time and money and even prevent yourself from buying a monitor that doesn’t fit your needs.

How to measure monitor screen size

How to measure monitor size

You can determine the size of your monitor quickly and without even getting up if you’re watching your screen right now. The most straightforward method is to look it up on the internet. You can check the manual, look at the packaging of your monitor or look up your model’s number or measure the screen directly.

If you’re unable to find the model of your monitor, you could make use of a tape measure to determine the dimensions of your screen from the bottom-right corner up to the top left corner. But, again, it is important to measure only the screen. Do not take any measurements of the bezel (the edge of the plastic) surrounding the screen.

How to measure your monitor size using a measuring tape

Laptops and desktops are available in various sizes for screens. This is just as important in terms of screen resolution because it’s vital to productivity. Again, the correct measurement can aid in determining the dimensions of a filter you should purchase.

Screen size refers to the physical dimension of the screen, and it is measured in inches. The most straightforward method of measuring the size of a computer monitor is to use measuring tapes or a ruler.

The laptop or computer manual will specify the size of the monitor. Manufacturers will sometimes put the size on a sticker attached to the device. However, if you don’t see it, you can determine the size of your current screen or one you’re interested in buying using a measuring tape.

  • Use a measuring tape that is of enough length.
  • Start at the top left corner and extend it down the diagonal until it reaches the lower-right. For example, if you begin from the top-right corner, you can pull it straight towards the corner at the bottom left.
  • Only measure the screen, not the bezel or the casing that surrounds the screen.
  • The diagonal measurement is the size of the screen.

How to tell what size my monitor is without measuring?

monitor size

If you don’t have a measuring instrument nearby, you can still estimate the size of your computer’s monitor by following these simple methods.

Model Number Determination

Examine the model code of your desktop or laptop. In most cases, you’ll find your monitor’s size embedded in the manufacturer’s number on your computer or desktop. As an example, for instance, you might own a VIOTEK GVF24CB display. The two numbers immediately following the letters represent the screen’s dimensions in inches, i.e., this VIOTEK screen is a 24-inch machine.

Checking The Computer Manual

It is also possible to read the manual for your computer’s monitor for details on sizing. In addition to the other specifications, one of the primary features is the size of the monitor.

Check Your Packaging

Are you able to find the packaging for your monitor? If so, most of the monitor packages should include the size of the screen.

Online Search

Another way to find out the size of your monitor is to search the internet for your monitor size. Search engines such as Google provide a variety of online tools you can utilize to determine the size of the screen of your monitor.

Another way to swiftly find out how big your screen online is going to the website to the computer’s manufacturer.

Go to the official website to find the model of the monitor that you are using since it provides precise information about the model. Write the model number of your monitor into the search bar, or browse the site for information about the size of the monitor.

How to measure monitor size with the help of math

The Pythagorean theorem is a method to determine the size of a monitor for a computer. It says that in a right-angled triangle, the square of one side, the hypotenuse part, is greater than the squares of the two other sides. In the case of a computer monitor, the hypotenuse is the diagonal measurement that tells you the size of the screen.

First, measure the screen’s width and height, multiply each number by itself and add both these numbers. Then, take the square root of these to get the diagonal measurement and the screen’s size.

For example, a Dell XPS 13 has a widescreen of 11.57 inches, and the height is 6.51 inches.

Multiply the width with itself to find 133.8. Then, multiply that height to obtain 42.38. Combine the numbers (133.8+42.38 =176.18). Calculate the square root (176.18 equals 13.27).

13.3 inches is the size advertised on the Dell XPS 13 laptop monitor.

Frecuently Asked Questions


What Differentiates Screen Resolution and Screen Size?

Screen size is the physical dimension of the screen, which excludes the bezels. In contrast, screen resolution is all the pixels on the screen. Therefore, it is possible to alter your screen’s resolution, regardless of the size of your screen.

What is the size of a monitor with a 24-inch size?

A display of 24 inches will measure around 20 inches in width and 12 inches high.

What are the most common sizes for monitors?

The majority of computer monitors are between 19-34 inches that are measured diagonally between corner and corner. Therefore, the typical user will be satisfied with 22-24″ monitors. This is a good range of screen space for all work-related tasks and moderate multitasking without overwhelming your desktop.

What is the most appropriate size for a monitor?

The ideal size for a screen is determined by its resolution and the distance you’re standing from the display. The majority of people think that a resolution of 1920×1080 is ideal for monitors that range from 25 inches. At the same time, 1440p is perfect when you’re looking at 27-inch, and 4K is suitable for more extensive than 30-inches depending on your preference.


measure monitor size

The goal to determine the size of your monitor is to select a suitable monitor for your needs and choose the correct dimensions of a filter. In terms of computer monitors’ physical dimensions, the ideal size to think about is approximately 24-inch to 30-inch.

These sizes of monitors are ideal for working from home and are a favorite among gamers online.

Screen sizes with larger screens generally have higher resolution and clarity of color. In addition, with more giant monitors, anticipate more formats, apps, and support for simultaneous operations.

Liam Weissman

A lover of MacBook Air and the Dell XPS line of laptops, Liam has been researching and writing as a guest blogger for numerous websites for over 10 years. Now, he blogs about tech trends, PCs, laptops, gadgets, and other emerging gadgets on

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