Aspect Ratio Calculator
The Aspect Ratio Calculator reduces a width/height pair (e.g. 1920×1080) to a simplified ratio like 16:9, and automatically computes the matching dimension when you change one of them.
How to use
- 1Enter the original width and height.
- 2See the simplified ratio (e.g. 16:9).
- 3Enter a new width or height to compute the matching dimension.
Why FREE PDF?
- Completely free
- No account required
- Processing happens in your browser whenever possible
- Your files stay yours
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Frequently Asked Questions
Does this tool actually resize an image?
No, it only calculates the correct dimensions. To actually resize an image, use the resize tool in the Image Tools section.