🖥 Midjourney Aspect Ratios Made Easy

By default, Midjourney prompts produce square images which have an aspect ratio of 1:1. This means that the width and height are the same.

Using the above prompt creates this grid of square images.

How to Set the Aspect Ratio in Midjourney?

To change the aspect ratio of your generated image you will need to use "--aspect" or "--ar" followed by your desired aspect ratio (3:4 for example.)

by adding the "--aspect 16:9" parameter change, Midjourney knows how to produce that aspect ratio

This was the result of the "piano lithograph --aspect 16:9" prompt

You can now even explore extreme aspect ratios like the one below which is 32:5.

I upscaled the first one because it was so cool.

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Upscale just means to make the image bigger

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REMEMBER: The numbers represent the "width: height" ratio. So if the first number is bigger, then you will get a landscape image (16:9 for example) and if the first number is smaller then you will get a portrait image (2:3 for example) and if the numbers are the same you will get a square image.

Aspect Ratio List

If like me you are looking for a list of the most common aspect ratios in Midjourney then you can check that out here and see the image below for a visual guide.

--ar 1:1
--ar 2:1
--ar 3:2
--ar 4:3
--ar 5:4
--ar 4:1
--ar 7:4
--ar 16:9
--ar 21:9

These are very common aspect ratio's that you can use in Midjourney

Common Landscape Aspect Ratios

I think it is important to see the different aspect ratios being used for landscape images and what effect that has on the image composition.

21:9 - Ultrawide

If you are looking for an extremely cinematic look then this is the ratio to go for.

PROMPT: Rockband playing onstage at night --ar 21:9

16:9 - Widescreen

I like to think of this as the "YouTube thumbnail" ratio.

PROMPT: Rockband playing onstage at night --ar 16:9

4:3 - Fullscreen

The "Old-school TV" aspect ratio.

PROMPT: Rockband playing onstage at night --ar 4:3

3:2 - Common with DSLR photos

What most of us would capture with our cameras.

PROMPT: Rockband playing onstage at night --ar 3:2

Common Portrait Aspect Ratios

I think it is important to see the different aspect ratios being used for portrait images and what effect that has on the image composition.

9:16 - The "Shorts" Aspect

This is the common aspect ratio for short-form videos on YouTube, Instagram Reels and Tiktok.

PROMPT: Rockband playing onstage at night --ar 9:16

2:3 - The "Novel" Aspect

I remember this one by thinking about a standard fiction book's dimensions.

PROMPT: Rockband playing onstage at night --ar 2:3

4:5 - The "Not-Quite-Phone" Aspect

This is a less common one that I remember thinking of as not quite taking up all the space of my phone's screen.

PROMPT: Rockband playing onstage at night --ar 4:5

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Now you know how to change the aspect ratio of your Midjourney images why don't you explore the --stylize parameter, the --chaos parameter, and the --weird parameter to get some really creative images?