Question 1

What is 16:9 aspect ratio?

Accepted Answer

16:9 is the international standard format for HDTV, YouTube videos, and modern displays. It means the width is 1.78 times the height. Common resolutions include 1920×1080 (Full HD) and 3840×2160 (4K).

Question 2

What is aspect ratio in images?

Accepted Answer

Aspect ratio is the proportional relationship between width and height of an image or video. It is expressed as two numbers separated by a colon, like 16:9 or 4:3. Different aspect ratios are suited for different purposes - 16:9 for video, 1:1 for Instagram, 9:16 for mobile stories.

Question 3

How do I calculate aspect ratio?

Accepted Answer

To calculate aspect ratio, divide both width and height by their greatest common divisor (GCD). For example, an image of 1920×1080 pixels: GCD is 120, so 1920÷120 = 16 and 1080÷120 = 9, giving you a 16:9 ratio. You can also use our calculator to do this automatically.

Question 4

What aspect ratio should I use for Instagram?

Accepted Answer

For Instagram feed posts, use 1:1 (square, 1080×1080) or 4:5 (portrait, 1080×1350). For Instagram Stories and Reels, use 9:16 (vertical, 1080×1920). Square format (1:1) is the most versatile and takes up the most space in the feed.

Question 5

What is the difference between 16:9 and 4:3?

Accepted Answer

16:9 is wider (widescreen) and used for modern TVs, YouTube, and presentations. 4:3 is more square-shaped and was the standard for old TVs and classic computer monitors. 16:9 is better for cinematic content, while 4:3 gives a vintage feel.

Question 6

What is 9:16 aspect ratio used for?

Accepted Answer

9:16 is the vertical video format designed for mobile viewing. It is used for TikTok videos, Instagram Stories, Instagram Reels, Snapchat, and YouTube Shorts. This format fills the entire smartphone screen when held vertically.

Image Ratio Blog & Tutorials

⭐Featured Articles

How to Calculate Image Aspect Ratio: Complete Guide with Screenshots

Instagram Aspect Ratio Guide 2026: Feed, Stories & Reels

All Articles

How to Calculate Image Aspect Ratio: Complete Guide with Screenshots

Instagram Aspect Ratio Guide 2026: Feed, Stories & Reels

YouTube Video Aspect Ratio: Best Practices for 2026

Ready to Calculate Your Image Ratios?