Free Aspect Ratio Calculator — Resize Images | Microapp

Calculate the aspect ratio of any image or video. Enter width and height to get the ratio, or enter one dimension and ratio to calculate the other.

Aspect ratio is the proportional relationship between width and height. It is expressed as W:H (e.g., 16:9 for widescreen video, 4:3 for traditional TV, 1:1 for Instagram squares).