# Aspect Ratio Calculator (Free ARC)

If you’re using images and videos, it’s essential to know what aspect ratio you need. And that’s why this aspect ratio calculator is a vital tool that will save you time.

Different websites and platforms have specific image size and aspect ratio requirements. So, if you submit the wrong aspect ratio or size, it may not publish your creations.

Aspect ratios are also important for photography, design, social media, and video editing.

For example, you might need to compress a file to a different size. You’ll want to get it right the first time, and that means you’ll need the correct aspect ratio.

But working out aspect ratios yourself can be confusing, and you might make a mistake. An aspect ratio calculator makes it simple and straightforward.

You can find out more about common aspect ratios here. In this guide, I’ve explained how aspect ratios work. There’s also a photography aspect ratio chart to reference.

But if you’re looking for 16:9 resolutions or the top 4:3 aspect ratios, this calculator has everything you need.

16:9 Aspect Ratio (HD)
To calculate common aspect ratios, you’ll need to know the width and length of your image. Our calculator uses these figures to work out what the aspect ratio is.
Width
Height
Final Dimensions
0 × 0
4:3 Aspect Ratio (SD)
To calculate common aspect ratios, you’ll need to know the width and length of your image. Our calculator uses these figures to work out what the aspect ratio is.
Width
Height
Final Dimensions
0 × 0
Aspect Ratio Calculator
Width
Height
Aspect Ratio
1 : 1
Dimensions
1 × 1
Mode

## What is Aspect Ratio?

Let’s get back to basics first of all! The aspect ratio refers to the height of an image or video compared to the width.

An aspect ratio is commonly written as the width followed by a colon and the height. For example:

• 16:9 aspect ratios
• 4:3 aspect ratios
• 1:1 aspect ratio

An image with a 1:1 ratio will be square, as the height and width are the same.

An image with a 2:1 aspect ratio is rectangular, with the width double the length of the height.

In some cases, you might need to resize an image while keeping the same aspect ratio. And that’s where our aspect ratio calculator comes in handy!

### What is 16:9 Aspect Ratio?

One of the most common aspect ratios you’ll find is the 16:9 dimensions. What this means is that the image has a width of 16 units and 9 units in height.

An example could be 16 inches x 9 inches, or 32 inches by 18 inches.

The 16:9 ratio has many uses, most commonly for digital and HD TV and DVDs. It’s also used for video on Facebook and YouTube, while Instagram uses a vertical 9x16 format.

You can use the 16:9 ratio calculator to make sure your video or image is in the correct format.

## How to Use Our Aspect Ratio Calculator

Calculating the aspect ratio manually can be tricky and time-consuming. That’s why we’ve created this aspect ratio converter to do the work for you.

To calculate common aspect ratios, you’ll need to know the width and length of your image. Our calculator uses these figures to work out what the aspect ratio is.

Another way to use it is to enter your desired aspect ratio. For example, you might need to create a 16:9 video for YouTube. If you know either the width or the height, enter that number. Then, the calculator will tell you how long the remaining length should be.

Our calculator is super quick and easy to use. It works automatically to provide you with the right ratios. Plus, it’s simpler than an aspect ratio print size chart.

It’s also versatile, allowing you to work out the aspect ratio for portrait and landscape images. And it also works perfectly for converting video aspect ratios. 