1:1 Aspect Ratio Calculator
Use this 1:1 aspect ratio guide to understand square dimensions, common resolutions, and how to size content for social posts, profile images, avatars, and square graphics.
What is 1:1?
1:1 is a square aspect ratio, which means the width and height are exactly the same. It is one of the simplest and most flexible image formats because it crops cleanly, works well for social graphics, and adapts nicely to profile images, thumbnails, avatars, and square post formats across multiple platforms.
Common 1:1 resolutions
- 512×512
- 800×800
- 1080×1080
- 1200×1200
- 2048×2048
Where 1:1 is used
- Instagram square posts
- LinkedIn square posts
- Profile images and avatars
- Thumbnails and square graphics
- Product images and simple image exports
How to calculate 1:1 dimensions
To calculate a 1:1 size, keep the width and height equal. If your width is 1080, your height is also 1080. If your height is 800, your width is also 800. The calculator makes this easy when you want to generate a square export size from a single known value.
1:1 vs other common social ratios
Compared with 4:5, 1:1 is more compact and takes up less vertical feed space. Compared with 9:16 it is much less immersive, but it is easier to reuse across thumbnails, avatars, product graphics, and general-purpose social design.
If you want a square format that works across multiple channels and use cases, 1:1 is the safest default ratio to start with.
Frequently asked questions
What is 1:1?
1:1 is a square aspect ratio where width and height are equal. It is commonly used for social posts, avatars, profile images, thumbnails, and square graphics.
Is 1080×1080 a 1:1 resolution?
Yes. 1080×1080 is a square resolution, which means it uses a 1:1 aspect ratio.
What is 1:1 used for?
1:1 is used for Instagram square posts, LinkedIn square posts, Facebook profile images, thumbnails, avatars, and image assets that need a clean square crop.
What is the difference between 1:1 and 4:5?
1:1 is perfectly square, while 4:5 is a taller portrait format. 4:5 usually takes up more vertical space in a mobile feed, but 1:1 remains versatile and widely supported.