Advertisement

Aspect Ratio Calculator

Calculate image proportions, simplify aspect ratios, and find missing width or height dimensions instantly.

Image Aspect Ratio Calculator

1. Calculate Ratio from Dimensions

16:9
Simplified Ratio
1.78
Decimal Value

2. Missing Dimension Solver

Enter an aspect ratio and one known dimension. The calculator will determine the missing dimension.

1280 × 720
Calculated Dimensions
Advertisement

What Is Aspect Ratio?

Aspect ratio describes the proportional relationship between the width and height of an image, video, screen, or other rectangular format.

Aspect Ratio = Width ÷ Height

Example:
1920 ÷ 1080 = 1.777...
Simplified Ratio = 16:9

Common Aspect Ratios

Common image and video aspect ratios include:

  • 1:1 — Square images
  • 4:3 — Traditional displays and photography
  • 16:9 — Widescreen video and displays
  • 3:2 — Common photography format
  • 21:9 — Ultrawide displays

How the Missing Dimension Calculator Works

If you know the aspect ratio and one dimension, this calculator determines the other dimension while preserving the original proportions.

Height = Width × Ratio Height ÷ Ratio Width

Width = Height × Ratio Width ÷ Ratio Height

Example

For a 16:9 image with a width of 1280 pixels, the corresponding height is 720 pixels.

Frequently Asked Questions

What is an aspect ratio?

Aspect ratio is the proportional relationship between an image's width and height.

How do I calculate an aspect ratio?

Divide the width by the height for the decimal ratio. You can also simplify the two dimensions using their greatest common divisor.

What does 16:9 mean?

A 16:9 image has a width-to-height relationship of 16 units wide for every 9 units high.

How can I find a missing image dimension?

Enter the aspect ratio and one known dimension. The calculator automatically determines the corresponding missing dimension.

Advertisement

Free online image tools at sandeepkhadka.com.np