Aspect Ratio Calculator
Calculate aspect ratios and resize dimensions for images and video.
Calculate aspect ratios, find matching dimensions, and resize images while maintaining proportions. Enter any dimension and get the ratio plus common matching sizes.
How to use Aspect Ratio Calculator
- Enter the width and height in pixels, or pick a common ratio.
- Read the simplified ratio, and type a new width to see the matching height.
- Press Download result to save the numbers as a text file.
Aspect Ratio Calculator FAQ
How do I find the aspect ratio?
Enter the width and height in pixels. The tool shows the simplified ratio, for example 16:9.
Can it help me resize?
Yes. Enter a new width and it gives the height that keeps the same proportions.
Is Aspect Ratio Calculator free to use?
Yes. Aspect Ratio Calculator is completely free. There is no signup or account, and PenguPix does not add its own watermark to your files.
Are my files uploaded anywhere?
No. Aspect Ratio Calculator runs in your browser, so your files stay on your device and are never uploaded to a server.
Does Aspect Ratio Calculator work on my phone?
Yes. It works in modern mobile and desktop browsers such as Chrome, Safari, Edge and Firefox.