This aspect ratio calculator lets you enter a width and height to instantly see the simplified ratio, lock it to scale dimensions proportionally, and find the closest standard ratio such as 16:9 or 4:3.
Aspect ratios matter when embedding images, videos, or ads without distortion — get the exact ratio and the nearest common preset without doing the math by hand.
How it works
Enter the width and height of your image or video.
Lock the ratio to scale one dimension automatically.
Compare the result against common standard ratios.