Aspect Ratio Checker
Calculate and check the aspect ratio of any image or dimensions.
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Common aspect ratios: 16:9 (widescreen HD), 4:3 (traditional photo), 1:1 (square), 9:16 (vertical/mobile), 21:9 (ultra-wide), 3:2 (DSLR photos).
About the Aspect Ratio Checker
Knowing the aspect ratio of an image is essential for setting CSS dimensions without distortion. Enter width and height or upload an image and get the exact ratio in simplified form.
How to use the Aspect Ratio Checker
- Enter width and height values, or upload an image.
- The aspect ratio is calculated instantly.
- Use the result to set correct CSS dimensions.
Frequently Asked Questions
- What is a common web aspect ratio?
- 16:9 is the most common for videos. 1:1 for profile pictures. 4:3 for many photos.
About this tool
All processing happens entirely in your browser. No data is uploaded to any server.
Image Tools