9:16 Aspect Ratio Calculator
Get the exact 9:16 size for vertical video — TikTok, Instagram Reels, YouTube Shorts and Stories. Enter a width or height and the other side is filled in.
Enter the size you have — the ratio is reduced to its simplest form.
What is the 9:16 aspect ratio?
9:16 is the vertical version of widescreen 16:9: the image is 9 units wide for every 16 units tall, a decimal ratio of 0.5625. It fills a phone screen held upright, which is why short-form video platforms use it.
width = height × 9 ÷ 16
The most common size is 1080 × 1920 px (Full HD vertical).
Where 9:16 is used
- TikTok — 1080 × 1920 recommended.
- Instagram Reels and Stories — 1080 × 1920.
- YouTube Shorts — 1080 × 1920 (up to 2160 × 3840).
- Facebook and Snapchat Stories — 1080 × 1920.
- Phone wallpapers — many phones are close to 9:16 or taller (9:19.5 and 9:20).
Safe zones
Apps place captions, buttons and profile names over the top and bottom of vertical video. Keep text and faces inside roughly the middle 1080 × 1420 px of a 1080 × 1920 frame so nothing important is covered.
Frequently asked questions
What size is 9:16 in pixels?
1080 × 1920 is the standard. 720 × 1280 and 2160 × 3840 (4K) are also 9:16.
Is 9:16 the same as 16:9?
Same shape, rotated: 16:9 is landscape, 9:16 is portrait.
What is the 9:16 height for a width of 1440 px?
1440 × 16 ÷ 9 = 2560 px.