Aspect Ratio Calculator

Calculate and convert between different video aspect ratios.

Calculate Aspect Ratio from Dimensions

Width (px)

Height (px)

Target Width (px)

Select Ratio

16:9 - Standard widescreen (YouTube, TV)

9:16 - Vertical (Instagram Reels, TikTok, Stories)

4:3 - Standard definition (old TV)

1:1 - Square (Instagram feed)

21:9 - Ultrawide cinematic

4:5 - Portrait (Instagram feed)