10 Best Aspect Ratio Calculator Online Tools You Should Know

Aspect ratios are crucial in video and image editing. It defines the proportional relationship between width and height. They ensure your media fits across various platforms. Using an aspect ratio calculator online helps you get the correct aspect ratio for all kinds of media.

The article will showcase 10 aspect ratio online tools to calculate in seconds. The page will also introduce dedicated tools for converting aspect ratios of photos and videos. Read on to find the best tools and ensure your content is optimized for any platform.

Part 1. Most Common Aspect Ratios You Need To Know About

Aspect ratios define the width-to-height ratio of an image or video. Let’s explore the most common aspect ratios used online, their uses, and where you might encounter them.

• 4:3: Often used in older television screens and computer monitors.

This nearly square format was ideal for the broadcasting equipment and content of its time. Today, it’s less common but still used in some video cameras and for nostalgic media formats.

• 3:2: Common in photography, especially for 35mm film.

The 3:2 ratio provides a slightly wider frame, which is great for landscapes and portraits. It balances width and height, which works well for printed photographs and digital displays.

• 1:1: Popular on social media platforms like Instagram.

The format is favored for its balanced and symmetrical look. It’s also useful for creating content that needs to be impactful in both landscape and portrait orientations.

• 16:9: Standard for high-definition televisions and most online videos.

This is the current standard for most online video platforms like YouTube. The widescreen format is ideal for modern video production, gaming, and streaming. The 16:9 ratio accommodates more visual information. It’s perfect for cinematic presentations and modern media consumption habits.

• 21:9: Used in ultra-widescreen displays and some cinematic formats.

The 21:9 format offers a wider field of view. It’s also popular in professional video editing and for creating a theater-like experience at home.

• Other aspect ratios

Beyond these, there are other aspect ratios like 5:4 and 2:1, each serving niche purposes. The 5:4 ratio is used in certain specialized imaging equipment. The 2:1 ratio offers a balanced widescreen experience without the extreme width of 21:9. These ratios cater to specific technical and creative needs in various fields.

Part 2. Top 10 Online Aspect Ratio Converters

Here are the top 10 online aspect ratio converters to help you quickly calculate and convert aspect ratios:

Calculate Aspect Ratio – Fast Online Aspect Ratio Converter

Calculate Aspect Ratio offers a simple interface to calculate the aspect ratio of your images and videos. The tool is designed for speed and ease of use. It’s an excellent choice for those needing quick calculations without extra features. However, it’s filled with ads, which can be annoying for some.

Andrew Hedges (ARC) – Simple Aspect Ratio Calculator

Andrew Hedges (ARC) provides a minimalist design that is easy to use. The platform is perfect for users who prefer a clean interface and straightforward functionality. It provides instructions and a formula to help you resize your photos or videos.

Digital Rebellion – Online Aspect Ratio Calculator

Digital Rebellion’s online aspect ratio calculator supports many formats. It offers versatile options for calculating aspect ratios. Its ability to handle a variety of input formats makes it a valuable tool for professionals. There are many presets to help you get the right dimensions for your images and videos.

Omni Calculator – Calculate Aspect Ratio Online

Omni Calculator is known for its detailed calculations and extra tools that go beyond simple aspect ratio conversion. It’s ideal for users who need in-depth calculations and other related features. However, its complexity can be overwhelming for beginners who might find the interface too detailed.

16:9 aspect-ratio.dev – Image Size and Ratio Calculator

This online aspect ratio converter uses a clean interface. It’s a specialized tool for those who work primarily with calculating image sizes and ratios. Its targeted functionality ensures precise calculations, but its limitation can be a drawback for users needing more versatility.

Calculator.net – Online Ratio Scaling Calculator

Calculator.net offers a versatile range of ratios and scaling options, making it a multi-purpose tool. It is suitable for users who need to calculate and convert various aspect ratios. It doesn’t provide a sample image as a reference, which can be bothersome to beginners.

Calculator Soup –Ratio Solver and Converter

Calculator Soup provides detailed ratio-solving capabilities. It’s an in-depth tool for users who need precise calculations. Its thorough approach is great for complex projects, but the user interface is not very intuitive. This can pose a challenge for some users.

Red Route – Free Aspect Ratio and Resizing Calculator

Red Route is a free online aspect ratio calculator that offers resizing options. Its no-cost access makes it attractive for budget-conscious users. However, it has limited support and is filled with ads, which can be cumbersome for some.

RapidTables – Ratio and Screen Resolution Calculator

RapidTables focuses on screen resolution and aspect ratios, providing a specialized tool for users working with different screen sizes. Its specificity makes it useful for certain applications. Unfortunately, this online aspect ratio converter is also filled with ads.

FreeOnlineTools – Free Online Aspect Ratio Converter

FreeOnlineTools offers a straightforward and free way to convert aspect ratios. Its ease of use makes it ideal for quick conversions but is limited in functionality. Nonetheless, the platform has a nifty aspect ratio results window. You can see your calculations in an instant.

These tools are calculators only, designed to quickly convert or calculate aspect ratios. To change the aspect ratio of your media files, the next parts will show you how.

Part 3. How To Change Image Aspect Ratios Online [2 Ways]

Changing image aspect ratios online is a straightforward process with the right tools. Let’s explore how to adjust aspect ratios using two popular online tools: Kapwing and Photoresizer.com:

Using Kapwing Image Resizer

Kapwing is a versatile online editor that supports various aspect ratios so you can get the perfect size. It can also fill any space with AI, which is a plus. Here’s how to change the aspect ratio of an image using Kapwing:

Step 1: Go to Kapwing’s Image Resizer tool and upload your image. If you want to start with a blank canvas, choose between the aspect ratios.

Step 2: Once your image is uploaded, select the Crop tool from the toolbar. Choose the aspect ratio that suits your needs, such as 1:1, 16:9, 4:5, and custom options.

Step 3: Adjust the crop area to frame your image. When you’re done, save the resized image to your device.

Using Photoresizer.com

Photoresizer.com is another dedicated tool for resizing images. Here’s how to use it:

Step 1: Go to Photoresizer.com and upload your image.

Step 2: Choose the Aspect Ratio tool from the menu. Select your preferred preset or enter custom dimensions. When you’re done, save your work.

While these online aspect ratio calculators are excellent for changing the aspect ratio of images, they are limited to static media. When it comes to videos, you need a more robust and dedicated tool like Wondershare Filmora. The next section explores how to use Filmora to change your videos’ aspect ratio effectively.

Part 4. Convert Video Aspect Ratios With Wondershare Filmora

Filmora is a powerful and intuitive video editing tool that simplifies the process of converting video aspect ratios. It offers many features that online aspect ratio calculators don’t have. It’s an ideal choice for anyone looking to convert videos after calculating an aspect ratio. Here are Filmora’s key features:

• Change aspect ratios in one click

Filmora allows you to switch between different aspect ratios such as 16:9, 4:3, 1:1, and 9:16 with just one click. It’s useful for creating content that fits various platforms like YouTube, Instagram, and TikTok.

• Support for multiple video formats

Filmora supports a wide range of video formats including MP4, AVI, MOV, MKV, and more. The flexibility allows you to work with almost any video file without worrying about compatibility issues.

• Cross-platform compatibility

Available for both Windows and macOS, Filmora provides a consistent user experience across different operating systems.

• Beginner-friendly interface

The intuitive and easy-to-use interface of Filmora makes it accessible for users of all skill levels. Even if you’re new to video editing, you can learn how to use the tool in minutes.

How To Change Video Aspect Ratios Using Filmora

Here are the steps to change video aspect ratios with Filmora:

Step 1: Download and install Filmora. Launch the program. If you don’t have an account, you can create one. Create a new project and upload your video. Drag it to the timeline.

Step 2: Click File > Project Settings above the timeline. Select your preferred aspect ratio from the dropdown. After choosing the aspect ratio, adjust your video within the frame.

Step 3: Preview your edits. When you’re satisfied, save and share your work on your computer or social media platforms.

Conclusion

Using offline and online aspect ratio converters is crucial for creating appealing content. From image resizing to video editing, they offer a range of features to suit your needs. The tools mentioned will help you calculate aspect ratios effortlessly. These online aspect ratio calculators can make your design process smoother and more efficient.

Meanwhile, for comprehensive video editing, Filmora is your all-in-one solution. Its intuitive interface and extensive format support make it an ideal choice for both beginners and professionals. Ensure your media looks great across all platforms, enhancing your content quality.