What is a 1:1 aspect ratio?

A 1:1 aspect ratio means the width and height are identical, forming a perfect square. For every 1 unit of width there is exactly 1 unit of height.

What is the standard 1:1 image size for Instagram?

Instagram recommends 1080 x 1080 pixels for square feed posts. This tool has a one-click preset for that size.

Does this work for units other than pixels?

Yes. The 1:1 ratio is dimensionless, so the math applies equally to centimeters, inches, millimeters, or any other unit of measurement.

How is the 1:1 ratio calculated?

For a 1:1 ratio, width equals height. If you know one dimension, the other is exactly the same value. No multiplication or division is needed.

What are common square sizes for app icons?

Common app icon sizes include 1024 x 1024 px (App Store / Play Store), 512 x 512 px, 256 x 256 px, and 128 x 128 px.

Can I use this for video as well as images?

Yes. Square video (1:1) is increasingly popular on Instagram and TikTok. Simply enter the target pixel dimension and both values will be equal.

1:1 Aspect Ratio Calculator

Enter any dimension and instantly get the equal matching dimension for a perfect 1:1 square.

Enter a Dimension

Width

Height (computed)

Common Square Presets

Result

Enter a dimension to see the result.

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Summary

The 1:1 aspect ratio means width and height are equal, producing a perfect square. It is the standard format for Instagram posts, profile pictures, app icons, and many social media thumbnails. This calculator lets you enter either dimension and instantly confirms the matching value, with common square presets for one-click filling.

How it works

Choose whether you know the width or the height.
Type the known dimension into the input field.
The calculator instantly sets the other dimension to match, forming a perfect square.
Use the common presets to fill in popular square sizes with one click.
Copy either dimension or both to your clipboard.

Use cases

Size Instagram feed posts to the required 1080 x 1080 px square.
Create square profile pictures for social networks and apps.
Design app icons that require equal width and height.
Set up a square canvas in design tools like Figma or Photoshop.
Verify that a product photo is truly square before uploading.
Export square thumbnails for video platforms.
Size square print materials such as stickers or coasters.
Confirm dimensions when cropping images to a 1:1 ratio.

Frequently Asked Questions

Last updated: 2026-05-23 · Reviewed by Nham Vu