Free Utility
100% Secure
Aspect Ratio Calculator
Calculate image and video aspect ratios (16:9, 4:3, 21:9) and compute proportional dimension scaling.
1. Original Dimensions & Ratio
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Aspect Ratio: 16 : 9
2. Proportional Rescaling
Overview
What this tool does
Calculate image/video aspect ratios (16:9, 4:3, 21:9) and compute proportional scaling dimensions.
100% private in-browser processing. Zero cloud uploads.
Tutorial
How to use it
- 1Enter original width and height dimensions.
- 2The calculator computes the simplified aspect ratio.
- 3Enter a new target width or height to get exact proportional scale dimensions.
What would you like to do next?
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