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.

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

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.

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.

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

Name: 1:1 Aspect Ratio Calculator
Availability: InStock
Author: Nham Vu

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

Width

Height (computed)

Common Square Presets

Enter a dimension to see the result.

Copied!

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

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.

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