Social & Creator Tools
Video Aspect Ratio Calculator
Enter dimensions (or pick a common preset like 16:9 or 9:16) to see the simplified aspect ratio, then scale to a new width or height while keeping proportions.
Original dimensions
16:9
Aspect ratio
Scale to a new size (fill in one side)
Height: 720px
How to use this tool
- 1Enter your original width and height, or pick a preset.
- 2See the simplified aspect ratio.
- 3Enter a new width or height to calculate the proportional other side.
Frequently asked questions
Which aspect ratio should I use for which platform?+
16:9 works well for YouTube and landscape video, 9:16 for Stories/Reels/Shorts and other vertical formats, and 1:1 for square feed posts — check each platform's current recommendations, since they do change.