Aspect Ratio Calculator
Find image and video aspect ratios, use presets like 16:9, and scale width or height proportionally.
Common ratios
Aspect ratio
16:9
(1.7778)
How to use
- 1
Enter dimensions
Type width and height in pixels or any unit.
- 2
Use presets
Quick-fill common ratios like 16:9 or 4:3.
- 3
Scale dimensions
Enter a target width or height to compute the matching side.
Frequently Asked Questions
The proportional relationship between width and height, expressed as W:H (e.g. 16:9).
Yes. The tool reduces dimensions to the smallest whole-number ratio using GCD.
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