Question 1

What is an aspect ratio calculator?

Accepted Answer

An aspect ratio calculator finds the proportional relationship between width and height and helps resize images, videos, screens, and designs without distortion.

Question 2

How do I calculate aspect ratio?

Accepted Answer

Divide width and height by their greatest common divisor. For example, 1920 and 1080 divide by 120 to simplify to 16:9.

Question 3

What is 1920 × 1080 as an aspect ratio?

Accepted Answer

1920 × 1080 simplifies to 16:9, a common widescreen ratio used for video, thumbnails, displays, and presentations.

Question 4

What is 1080 × 1920 as an aspect ratio?

Accepted Answer

1080 × 1920 simplifies to 9:16, a common vertical video and portrait layout ratio.

Question 5

What does 16:9 mean?

Accepted Answer

16:9 means the width has 16 parts for every 9 parts of height. Any dimensions with the same proportion keep the same shape.

Question 6

How do I resize an image without stretching it?

Accepted Answer

Keep the same aspect ratio. Change either width or height, then calculate the other dimension proportionally.

Question 7

What is the difference between aspect ratio and resolution?

Accepted Answer

Aspect ratio describes shape, such as 16:9. Resolution describes actual pixel dimensions, such as 1920 × 1080.

Question 8

What is a square aspect ratio?

Accepted Answer

A square aspect ratio is 1:1, meaning width and height are equal, such as 1080 × 1080.

Question 9

Can I calculate missing width or height?

Accepted Answer

Yes. Enter the original width and height, then choose a resize mode to calculate a proportional new width or new height.

Question 10

Why are resized dimensions rounded?

Accepted Answer

Real image and video dimensions normally use whole pixels, so proportional results are rounded to practical pixel values.

Aspect Ratio Calculator

Dimensions

Result

Common presets

Example ratios

Aspect ratio questions

More tools to try