Aspect Ratio Calculator
Calculate and convert aspect ratios for images and videos
Calculate Ratio from Dimensions
:
Aspect Ratio
16:9
(1.778)
Calculate Dimension from Ratio
Calculated Dimension
1920 x 1080
Common Aspect Ratios
16:9
HD Video
4:3
Standard
21:9
Ultrawide
1:1
Square
3:2
Photo
9:16
Mobile
2:1
Univisium
5:4
SXGA
About Aspect Ratios
Aspect ratio is the proportional relationship between width and height of an image or video.
16:9 - Standard HD video format (1920x1080, 1280x720)
4:3 - Classic TV and monitor format
21:9 - Ultrawide cinema format
1:1 - Square format (Instagram posts)
9:16 - Vertical video (Stories, Reels, TikTok)