How do I resize an image without stretching it?
Keep the original width-to-height ratio. Enter the original dimensions and one desired dimension; the calculator supplies the other one.
Easy Aspect Ratio Calculator for Beginners
Resize dimensions without stretching the picture. The labels are written in plain English, so no technical experience is needed.
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Private by design: this tool works on your device. Your information is not uploaded.
How to use this aspect ratio calculator
- Enter the original width and height to establish the aspect ratio.
- Enter the new width or height you need.
- Use the matching dimension shown by the calculator when resizing your image or video.
Common questions
What does a 16:9 aspect ratio mean?
It means the image is 16 units wide for every 9 units high. Examples include 1920×1080 and 1280×720.
Does this calculator change my image file?
No. It only calculates dimensions. Use the image resizer to create the resized file.