Aspect Ratio Calculator
How do I calculate aspect ratio?
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
This tool keeps a width-to-height ratio fixed while solving for a missing dimension — enter a known width and height plus a new width (or height), and it returns the matching value that preserves the same proportions, along with the ratio in its simplest form (like 16:9 or 4:3).
It is a staple for video editors and YouTubers resizing footage without distortion, designers cropping images or laying out responsive layouts, and anyone printing or resizing a photo who needs to know what height goes with a given width so nothing gets stretched or squashed.
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