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Detailed Guides to Calculate, Find, and Adjust Image Ratio

Liza Brown
Liza Brown
Originally published Nov 29, 21, updated May 20, 24

You might have noticed that earlier DVDs came with full screen or widescreen viewing choices. Moreover, when you choose the wrong option, it cuts off the movie parts, or the video gets surrounded by black padding.

The standard resolution of your screen stretched from a 4:3 aspect ratio to the wider one. So, producers started making movies that fit on both screens. After the standardization of aspect ratio display, broadcasters pay attention to the image ratio of clips.

So, below is the guide to find, calculate and adjust image ratio with a picture ratio calculator. Let's get started.

Part 1 What is the image ratio?

The image or aspect ratio is the ratio of width to the height of a picture without any pixels attached. It is expressed with two a colon that separates two numbers, for example, 16:9.

In cinematography, common image ratios are 1.85:1 and 2.39:1, and in TV photography, it is 4:3 and 16:9. However, in still photography, the standard aspect ratio is 3:2.

Part 2 Where Can I Find the Image ratio?

To select the right photo print size, you must consider the photo ratio and the print ratio. You can not accidentally choose the balance that needs cropping from the sides of the photo.

So, first, you must know how or where you can find the image ratio. The following are the methods to do so:

Method 1: Check your Camera

The image ratio depends directly on the camera's sensor. You can find the correct balance for photo print based on your camera type. For example, APS-C and Full-frame cameras shoot in a 3:2 ratio. But compact cameras often shoot in a 4:3 ratio.

The photos that you click with your smartphones have a 16:9 or 4:3 ratio. The picture below shows some common photo ratios by type of camera and where it will look great in the home.

 Common image Ratio

Method 2: Find Image Information

Unlike the photo ratios, image information determines the original width and height of the image in pixels. You can measure the picture dimensions in any unit, but you will always see the web or digital images in pixels.

Always remember that two different pictures with the same image ratio may not have the same dimensions. For example, a picture with size 1920X1080 pixels and a photo with size 1280x720 pixels can both have a 16:9 aspect ratio.

Method 3: Check with Photoshop

You can quickly check the image ratio in Photoshop (picture ratio calculator) using a crop tool. To do so, follow the steps mentioned below:

Open the image in Photoshop.

Choose a crop tool.

Select the photo ratio.

Test different image ratios. You can begin with the standard ratios like 3:2, 16:9, 4:3, or 5:4.

If the crop frame captures the whole picture, it means you have already found the correct ratio.

Do you want a photo print in panorama or square shape? If yes, crop the picture to make it fit a different image ratio. For instance, edit the photo to fit a 1:1 ratio for a square shape.

Or crop a picture to 2:1. 3:1. 4:1, 5:1, or 6:1 ratio for a panorama photo.

Photoshop testing

Method 4: Image Ratio Calculation

You can find the image ratio using the resolution of a photo easily on a window's system. To do so, right-click on an image file and scroll down to the Properties. Under details, you will notice, size of a photo in pixels.

To calculate the photo ratio, divide the width by the height of an image. If the total is an integer, multiply it by other numbers. These numbers are photo ratios.

Example 1:

Photo is 4966px by 3312px

Divide 4966 by 3312= 1.5

Now, multiply 1.5 with 2 to obtain a whole number (1.5 X 2= 3)

The photo's ratio is 3:2

Example 2:

Photo is 4416 x 3312 px

Divide 4416 by 3312= 1.3

Multiply 1.3 with 3 to obtain a whole number(1.3 x 3= 3.9 or approx. 4)

The photo's ratio is 4:3

Part 3 How to adjust image ratio

Image ratio is significant in the videography business. But adjusting the video aspect ratio is more critical. Therefore, if you are a video editor, you must know how to do it. There are plenty of options to adjust the aspect ratio, and one of them is to use a photo aspect ratio calculator.

If you want to make permanent adjustments, use a convertor or editor. "Wondershare Filmora" is the best video editor that allows you to create videos with different aspect ratios and adjust these ratios easily.

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The following are different methods to adjust the aspect ratio in Wondershare Filmora:

Method 1: Adjust Aspect Ratio at the Starting Interface

Wondershare Filmora helps you to adjust the video aspect ratio once you launch the editor program. To begin, go to the "drop-down" menu button. Now, press on it to check some commonly used photo ratios such as 16:9, 1:1, 4:3, 9:16, or 21:9.

Choose the ratio that you want by simply clicking on it.

Starting interface in Filmora

Method 2: Adjust Aspect Ratio under Project Settings

You can adjust the aspect ratio by clicking on the "Project Settings." Then, decide the target aspect ratio depending on the aspect ratio of the media source.

For instance, if the aspect ratio of media source files is 4:3, select the standard aspect ratio of 4:3. Then, media files with other aspect ratios will shoe black bars.

So, if any discordance occurs or you want to change the video aspect ratio, select the proper balance from project settings.

Project Settings

Method 3: Adjust Aspect Ratio during Editing

Once you import the videos into the timeline of the Wondershare Filmora, you can easily adjust the ratio from the Crop and Zoom tool.

Go to timeline and right-click on the video clip. Then, select "Crop and Zoom." You will see the pop-up window.

Click on 16:9, 4:3, 1:1, or 9:16 manually at the bottom to change the video aspect ratio.

You can also manually enter the video aspect ratio. Then, click on the "Ok" button.

Crop and Zoom Tool

Once you make the adjustments in the aspect ratio, add background blur effects if you notice a black bar. It will enhance the video. You can also intensify your video by using filters, visual effects, overlays, or titles.

Video Enhancing

Method 4: Adjust Video Aspect Ratio with Auto-Reframe

If you use the latest versions of Filmora, you will see Auto Reframe helps adjust the aspect ratio. Other

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The following are steps to change the aspect ratio using the Auto-Reframe option:


Once you upload the video clips to the media library, right-click on it and select the Auto-Reframe option.

Choose Auto-Reframe option

You will see the Auto Reframe window appear on the screen. Replace the existing video with a new clip. Then, change the video aspect ratio and video motion speed. Make sure to change the aspect ratio that fits most with different social media platforms.

Select the Aspect Ratio

Once you select the aspect ratio, click on the "Analyze" button. Filmora will Auto-Reframe the video itself. Once the process completes, you can see results in the preview window. Drag box to adjust the frame or to keep the object in it. It will automatically delete the content outside the box.

Drag Box

After completing adjustment or reframing, click on the "Export" button to save your video.

Change the name of the video and select the location where you want to save the video.

Now, click on the "Export" again to save.

Click Export Button

Method 5: Adjust Aspect Ratio at Exporting

You can save the clip to your system or smartphones, depending on your requirements. Then, upload them directly to Youtube or burn them into DVD by clicking on the "Export button." In this way, you can watch it on widescreen or standard TV whenever you want with an image size aspect ratio calculator.

Upload or Burn by Clicking on Export Button

Adjust Aspect Ratio for the Local Computer

First, you will see the "Local" tab. There you can save the clip in a particular aspect ratio to your system. You can see all resolutions with various aspect ratios after selecting the format. The output video depends on the media click resolution.

Adjust Aspect Ratio for a Device

Change the "Device" tab to save the video in formats compatible with popular devices, including iPod, iPhone, PSP, iPad, etc. Choose your favorite or the best resolution. Once you choose the device, you will see all resolutions.

The video quality will continue improving with higher resolutions. But it will also increase the size of the file.

Adjust Aspect Ratio for YouTube

Go to the "YouTube" tab and fill in the information. Then, click the "Export" button. Selecting the aspect ratio again is not necessary. It will directly upload your videos to YouTube.

Adjust Aspect Ratio for DVD TV

When you go to the "DVD" tab, you will notice various aspect ratio options. Switching the aspect ratio for TV from 4:3 to 16:9 is pretty straightforward. To do so, select what you think is right. Try to use image size aspect ratio calculator to get the right ratio.


Aspect ratio holds great importance in the proper display. So, it would be best to learn the calculation and adjustment of the image ratio using photo aspect ratio calculator or image size proportion calculator.

Hopefully, the above points will help you to learn calculation and adjustment processes. Also, do not forget to use Wondersahe Filmora to set the image ratio and edit the video with ease.

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