Aspect Ratio Calculator

About Aspect Ratios

An aspect ratio is the proportional relationship between the width and height of a rectangle. It's commonly written as width:height (e.g., 16:9) or as a decimal (e.g., 1.78:1).

Common Aspect Ratios:

• 16:9 (1.78:1) - Standard widescreen format for videos and modern displays
• 4:3 (1.33:1) - Traditional TV and computer monitor format
• 1:1 - Square format, popular on social media
• 21:9 (2.35:1) - Ultra-widescreen/Cinematic format

This calculator helps you either find the aspect ratio from given dimensions or calculate missing dimensions when you know the desired aspect ratio.