What is Aspect Ratio?
Aspect ratio describes the proportional relationship between a shape's width and its height. It is commonly expressed as two numbers separated by a colon, such as 16:9. For digital creators, maintaining this ratio is vital to prevent "stretching" or "squashing" images when resizing them for different platforms.
Common Ratios for 2026
- 16:9 (Widescreen): Standard for YouTube, TV, and presentation slides.
- 9:16 (Vertical): The "TikTok" or "Reels" ratio. Optimized for mobile viewing.
- 1:1 (Square): Traditional Instagram feed posts and profile pictures.
- 4:5 (Portrait): Popular for high-engagement Instagram and LinkedIn posts.
Zero Data, Maximum Precision
While many calculators require you to upload your images, the Aspect Ratio Alchemist works purely with mathematics. By entering your dimensions, our local script solves for the missing value instantly. Your project details and image dimensions remain strictly on your machine, ensuring complete privacy for your creative workflow.