Aspect Ratio Calculator
Calculate aspect ratios and resize dimensions. Keep proportions when resizing images or videos. Free online aspect ratio calculator.
How to Calculate Aspect Ratios
- 1 Enter the original width and height of your image or video
- 2 View the calculated aspect ratio
- 3 Enter a new width or height to resize proportionally
- 4 Use preset common ratios if needed
- 5 Lock the ratio to maintain proportions while resizing
Frequently Asked Questions
Is my code or data stored anywhere? ▼
No. All developer tools process data locally in your browser. Nothing is sent to any server or logged.
Can I use these tools offline? ▼
Yes! After the initial page load, most developer tools work without an internet connection.
Are there API limits? ▼
No limits. Since processing happens in your browser, you can use the tools as much as you need.
Is the output compatible with production use? ▼
Yes. Our tools produce standard-compliant output suitable for production environments.
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Last updated: January 15, 2026 · v2.1