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1:1 Aspect Ratio Calculator
Work with the 1:1 aspect ratio: enter one dimension and get the other keeping 1:1, or check whether a size matches 1:1. For example 1920 × 1920 is a 1:1 size (1:1 means 1 units wide for every 1 tall). The calculator reduces any width×height to its simplest ratio with the greatest common divisor and solves the missing dimension so images and video keep 1:1 without distortion — all in your browser. Common for square social posts and avatars.
1:1 means 1 wide for every 1 tall
- Example 1:1 size: 1920 × 1920
- Reduced via gcd; resize keeps the ratio (no distortion)
Frequently asked questions
What dimensions are 1:1?
Any width×height that reduces to 1:1. For example 1920 × 1920 is 1:1. Enter one dimension in the calculator and it returns the other keeping 1:1.
How do I resize to 1:1?
Set the ratio to 1:1, type your new width (or height), and the calculator computes the matching height (or width) so the image keeps 1:1 without stretching.