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9:16 Aspect Ratio Calculator

Free 9:16 aspect ratio calculator for vertical video, TikTok, Reels, Shorts, and mobile stories. Find width or height for 1080x1920, 720x1280, and custom sizes.

Other Ratios: 16:9 9:16 21:9 4:3 3:2 1:1 16:10

Answer

Aspect ratio 9:16
Actual (decimal) 0.56:1
Nearest standard 9:16
Width 1080 px
Height 1920 px
Width / Height 0.5625
Diagonal 2202.9 px
9:16

What is the 9:16 Aspect Ratio?

The 9:16 aspect ratio is a vertical rectangle – 9 units wide for every 16 units tall. It’s the standard for full‑screen vertical video on TikTok, Instagram Reels, YouTube Shorts, and Snapchat.

As smartphone usage dominates, 9:16 has become the default for mobile‑first content. It fills the phone screen perfectly, eliminating black bars and capturing more attention.

If you’re creating content for Stories or vertical ads, sticking to 9:16 ensures your video or image looks native on mobile devices.

Common 9:16 Resolutions

These are the most common vertical pixel dimensions.

Resolution Width Height Pixel Count
Vertical HD7201280921,600
Full HD vertical / 1080p108019202,073,600
4K vertical216038408,294,400
8K vertical4320768033,177,600

Why Use a 9:16 Calculator?

Use this calculator to quickly determine the correct pixel dimensions for vertical videos, stories, and mobile ads. Enter one dimension and it instantly finds the other while keeping the 9:16 proportion.

Maintaining 9:16 prevents awkward cropping or stretching when uploading to platforms like TikTok, Reels, and Shorts.

Frequently Asked Questions

Q: What resolution is 9:16?

Common 9:16 resolutions are 1080x1920 (Full HD vertical), 720x1280, and 2160x3840 (4K vertical). Any width:height pair that simplifies to 9:16 works.

Q: How do I convert 16:9 to 9:16?

To switch from landscape to vertical, rotate the dimensions: a 1920x1080 (16:9) image becomes 1080x1920 (9:16). The calculator’s 'Find Height' mode can also compute the missing side.

Q: What platforms use 9:16?

TikTok, Instagram Reels, YouTube Shorts, Snapchat, and many mobile ads use 9:16. It is now the default for vertical video content.

Q: Is 9:16 the same as portrait orientation?

Yes, 9:16 is the portrait orientation of 16:9. It is taller than wide, matching how most people hold their phones.