Aspect Ratio Calculator

Aspect Ratio Calculator

Select common ratios or enter your own to calculate the pixel dimensions for your images or videos through this calculator.

Common Ratios:

Width (W₁):

Height (H₁):

Width (W₂) (Optional):

Height (H₂) (Optional):

Note: Enter either W₂ or H₂ to find the other, or, left both inputs empty.

An online aspect ratio calculator allows you to determine the pixel dimensions and aspect ratios of videos and images. You can also convert the dimensions with the same mode and pixels of the screen with this aspect ratio converter. Here, you can learn and understand how to calculate aspect ratios and typical sizes of screens.

Let’s start with the basic definition of aspect ratio!

What is Aspect Ratio?

The ratio of width to height of a screen is called the aspect ratio. It is usually represented as two numbers separated by a colon, for example, 16:9. In an aspect ratio of x:y, the screen is x units wide and y units high. Aspect ratios are simplified to their smallest form to ensure they fit perfectly on any display. Using an online aspect ratio calculator can help eliminate errors and achieve the perfect ratio. Some commonly used aspect ratios include 3:2 for still cameras, 16:9 and 4:3 for TVs, and 1.85:1 and 2.39:1 for films.

How to Calculate Aspect Ratio?

To calculate the aspect ratio manually, divide the width by the height to find the ratio. If you want to resize the screen while maintaining the same ratio, multiply the original width by the scaling factor derived from the new height. Follow these steps to accurately determine the new width:

Step 1:

Take the original width and height

Height = 1080

Width = 1920

Step 2:

Now, divide the height by its width

1080 / 1920 = 0.5625

Step 3:

Then, multiply the quotient by new height

0.5625 x 400 = 225

So, the result gives you the new width of the screen. Additionally, an online PPI Calculator can help you determine the dots per inch (DPI), pixels per inch (PPI), and overall display size for any device.

How to Calculate the Screen Size?

If you want to determine your screen's aspect ratio, you can use specific formulas to calculate the height, width, and total area of the display accurately:

Ratio (r) = x / y

Height of screen (h) =

\( \dfrac{d} {\sqrt {r^2 + 1}} = \dfrac {y * d} {\sqrt{x^2 + y^2}} \)

Width (w) =

\( \dfrac{r * d} {\sqrt{r^2 + 1}} = \dfrac{x * d} {\sqrt{r^2 + 1}} \)

Area of Screen (A) =

\( \dfrac{r * d^2} {r^2 + 1} = \dfrac {x * y * d^2} {x^2 + y^2} \)

Typical Sizes of Screens and Aspect Ratios:

Here’s a list of typical screen resolutions and aspect ratios.

Name	Aspect ratio	Width (pixel)	Height (pixel)
480p	3:2	720	480
576p	5:4	720	576
720p	16:9	1280	720
1080p	16:9	1920	1080
2160p (4K UHD)	16:9	3840	2160
4320p (8K UHD)	16:9	7680	4320
8640p	16:9	15360	8640
SVGA	4:3	800	600
WSVGA	~17:10	1024	600
XGA	4:3	1024	768
XGA+	4:3	1152	864
WXGA	16:9	1280	720
WXGA	5:3	1280	768
WXGA	16:10	1280	800
SXGA (UVGA)	4:3	1280	960
SXGA	5:4	1280	1024
HD	~16:9	1360	768
HD	~16:9	1366	768
SXGA+	4:3	1400	1050
WXGA+	16:10	1440	900
HD+	16:9	1600	900
UXGA	4:3	1600	1200
WSXGA+	16:10	1680	1050
FHD	16:9	1920	1080

However, an online Ratio Calculator can help you determine equivalent ratios by providing three out of four values of two ratios.

How Does the Aspect Ratio Calculator Work?

An online screen size calculator helps you find the aspect ratio and dimensions of an image or screen by following these steps:

Input:

First, select a common ratio from the drop-down list, or enter a custom width and height to calculate the aspect ratio.
Enter the new width or height values you want to calculate.
Click the “Calculate Aspect Ratio” button.

Output:

The screen aspect ratio calculator provides:

New Height / Width
New Dimensions
Pixels
Mode
Visual Aspect Ratio

FAQs:

What is the aspect ratio for a Facebook Profile?

The aspect ratio for a Facebook profile picture is:

Aspect ratio: 1:1

Recommended size: 128 x 128 pixels

Cover Photo:

Aspect ratio: 19:6

Recommended size: 820 x 461 pixels

What is anamorphic?

An anamorphic image is a wide-screen picture on a 35 mm film that uses a non-standard aspect ratio. Typically, it displays a 2.4:1 aspect ratio, which is close to 16:9, giving a wider cinematic field while cropping the top and bottom of the image.

What is the best aspect ratio for prints?

For printing documents, 2:3 is the most common aspect ratio. Posters, decals, and canvases with dimensions like 24 x 36 inches or 40 x 60 inches are ideal examples of the 2:3 aspect ratio.

Conclusion:

Use this online aspect ratio calculator to verify dimensions when resizing videos or images. Maintaining the correct screen size and aspect ratio is essential to ensure proper display and proportional resizing for both images and videos.

Reference:

From the source of Wikipedia: Practical limitations, Cinema terminology, Movie camera systems, Current video standards, Previous and currently used aspect ratios.

From the source of Technopedia: Aspect Ratio Mean, How to measure aspect ratio, the importance of ratio.

From the source of MasterClass: Common Aspect Ratios for Images, Image Size, Best Aspect Ratio for My Project, Common Aspect Ratios for Social and Web, Letterboxing and Pillarboxing in Film.