Question 1

What is an aspect ratio?

Accepted Answer

It is the proportional relationship between width and height — for example 16:9 means 16 units wide for every 9 units tall.

Question 2

Which ratio should I use for YouTube Shorts?

Accepted Answer

9:16 vertical (1080 × 1920). For standard YouTube videos use 16:9 (1920 × 1080).

Question 3

Does the calculator upload anything?

Accepted Answer

No. It is a plain calculation in your browser.

Question 4

Is it free?

Accepted Answer

Yes, free with no sign-up.

Question 5

How do I find the aspect ratio of an image?

Accepted Answer

Enter the image's width and height and the calculator shows the simplified ratio — for example 1920 × 1080 becomes 16:9.

Video Aspect Ratio Calculator