Creator Utilities
Aspect Ratio Calculator
Find a missing image or video dimension while preserving aspect ratio, or simplify any width and height into a ratio such as 16:9.
Edit either new dimension; the other side updates automatically.
How to use Aspect Ratio Calculator
- 1
Enter the source width and height.
- 2
Optionally enter a new width or new height.
- 3
Copy the calculated matching dimension.
- 4
Use the result in an image editor, video editor, or streaming canvas.
Frequently asked questions
What is an aspect ratio?
It is the proportional relationship between width and height, such as 16:9 or 1:1.
Can I calculate dimensions from only one side?
Yes. Provide the original ratio and either a new width or a new height.
Does rounding change the image?
A one-pixel rounding difference is normal when a ratio does not produce whole-number dimensions.
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