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
- Decimal
- 0.563:1
- Orientation
- Portrait
- CSS
- aspect-ratio: 9 / 16;
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
Direct answer
What is the 9:16 aspect ratio?
The 9:16 aspect ratio is a vertical frame measuring 9 units wide for every 16 units high. The most common full-HD size is 1080 × 1920 pixels. It suits TikTok videos, Instagram Reels, YouTube Shorts, stories, and vertical ads, but text and faces should remain clear of platform interface overlays.
Find height
height = width × 16 ÷ 9
Find width
width = height × 9 ÷ 16
| Concept | What it describes | Example |
|---|---|---|
| Aspect ratio | The proportional shape of a frame | 9:16 |
| Resolution | The number of pixels in that frame | 1080 × 1920 |
Crop and placement check
Platform controls and captions vary by app and placement. Keep essential text, faces, logos, and calls to action away from the extreme top, bottom, and right edge, then check the final asset in the destination platform before publishing.
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.
Review record
Sources and review date
Last reviewed August 1, 2026. Calculations use the width-to-height relationship shown on this page.
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Related guides
Use these supporting guides to understand the tool result and next testing steps.
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