Aspect Ratio Calculator
Find the aspect ratio and resize dimensions proportionally.
How it works
Fill in the 3 fields above and Aspect Ratio Calculator calculates the result instantly, recalculating as you change any value. The math runs locally in your browser — nothing is sent to a server.
Examples
- Width 1920, Height 1080, New width 1280 → Aspect ratio: 16 : 9
Frequently asked questions
How do I use the Aspect Ratio Calculator?
Enter your values in the 3 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
Is my data private?
Yes. The Aspect Ratio Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Aspect Ratio Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on developer tools and the rest of the platform, you can use it as often as you like.
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