Vertical video calculator
9:16 Aspect Ratio Calculator
Use this 9:16 calculator to create vertical video and story dimensions that fit mobile screens without stretching.
Ratio preview
TikTok videos, Instagram Reels, YouTube Shorts, Snapchat stories, vertical ads, and mobile-first assets.
Calculate 9:16 dimensions
Enter width or height. The matching dimension updates automatically to keep the 9:16 shape.
9:16 result
1,080 × 1,920
9:16 ratio
Common 9:16 sizes
| Use | Size | Note |
|---|---|---|
| Full HD vertical | 1080 × 1920 | Common TikTok, Reel, and Short export size. |
| HD vertical | 720 × 1280 | Smaller file vertical video size. |
| 1440 vertical | 1440 × 2560 | High-resolution mobile export. |
| 4K vertical | 2160 × 3840 | High-end vertical video output. |
Best uses
How to use 9:16
Use 9:16 for mobile-first stories
Choose 9:16 when the final asset will be watched vertically on a phone. Calculate the matching height or width first, then keep captions, logos, and important faces away from platform buttons and safe areas.
Frequently asked questions
Is 1080 × 1920 a 9:16 ratio?
Yes. 1080 × 1920 is the common full-HD 9:16 vertical size.
Is 9:16 the same as 16:9?
It uses the same numbers but rotated. 16:9 is horizontal, while 9:16 is vertical.
What should I avoid in 9:16 designs?
Avoid placing important text at the extreme top or bottom because platform buttons, captions, and safe areas can cover content.
Can I crop 16:9 video into 9:16?
Yes, but important subjects may be cut off. Reframe the scene or redesign the layout when the original horizontal video has important content near the edges.
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Related guides
Use these supporting guides to understand the tool result and next testing steps.
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