Aspect Ratio Calculator
Find the aspect ratio of any width and height, and calculate the matching height or width when you resize an image or video.
16:9 (1.778)
Resize and keep the ratio
New width → height 720
New height → width -
Find and keep an aspect ratio
The aspect ratio is the relationship between width and height, such as 16:9 for widescreen video or 4:3 for older screens. Enter a width and height to get the simplified ratio, or resize to a new width or height while keeping the same shape.
What is an aspect ratio?+
It is the proportion of width to height, written as two numbers such as 16:9.
How do I resize an image without stretching it?+
Enter the original size, then type the new width. The matching height is calculated so the proportions stay the same.
What is 1920x1080 as a ratio?+
1920x1080 simplifies to 16:9.