Creator & work tools
Aspect Ratio Calculator
Calculate matching video or image dimensions for 16:9, 9:16, 4:5, 1:1, and more.
Find the matching height for a chosen width and aspect ratio. It is useful for YouTube, Shorts, Reels, social posts, presentations, and video editing.
Aspect ratio versus resolution
Aspect ratio describes shape, such as 16:9. Resolution describes pixel dimensions, such as 1920×1080. Many different resolutions can share the same aspect ratio.
Common formats
16:9 is a common landscape video format, 9:16 is common for vertical video, 1:1 is square, and 4:5 is a popular portrait image ratio.
Avoid stretching
When resizing media, keep the original aspect ratio unless you intentionally want to crop or add space. Changing only one dimension can distort the image.
Frequently asked questions
Does higher resolution mean better quality?Not always. Source quality, compression, bitrate, and display size also matter.
Can I enter any width?Yes. The height is rounded to the nearest whole pixel.