Aspect Ratio Calculator
Enter a width and height to get the simplified aspect ratio, or scale any ratio to a new size. Includes one-click presets for common video and image frames.
Free, no signup needed. Runs 100% in your browser.
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How to use this tool
- Enter your width and height.
- Read the simplified ratio.
- Use the solver or a preset to scale it.
Frequently asked questions
How is the ratio simplified?
Width and height are divided by their greatest common divisor, so 1920 by 1080 becomes 16 to 9.
How does the scale solver work?
It keeps your ratio fixed: enter a new width to get the matching height, or the reverse.
Is it free?
Yes, free with no signup.
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