Calculateur de Ratio d'Aspect

What is Aspect Ratio?

Aspect ratio describes the proportional relationship between the width and height of an image or screen. It is commonly expressed as two numbers separated by a colon, such as 16:9.

Common Ratios

• 16:9 (Widescreen): Standard for HDTV, Full HD, 4K, and most modern monitors.
• 4:3 (Standard): Old standard for TVs and CRT monitors. Still used in some tablets (iPad).
• 1:1 (Square): Common in social media like Instagram posts.
• 21:9 (Ultrawide): Used in movies (CinemaScope) and ultrawide monitors for immersion.
• 9:16 (Vertical): Standard for "Stories" and smartphone videos (TikTok, Shorts).