Calculate perfect dimensions for any screen, image, or video with real-time preview, comprehensive validation, and professional-grade accuracy.
Enter original dimensions to see aspect ratio calculations and visual preview
Aspect ratio is the proportional relationship between the width and height of a rectangle, expressed as two numbers separated by a colon (e.g., 16:9).
Correct aspect ratios ensure content displays properly across different devices and platforms without distortion or cropping.
Different aspect ratios create different visual experiences and emotional responses.
Expert answers to common aspect ratio and dimension calculation questions
Divide width by height to get decimal ratio, or find GCD to get reduced whole numbers. Example: 1920÷1080 = 1.78 or 16:9.
They're the same ratio expressed differently. 16:9 is the reduced fraction, 1.78:1 is the decimal equivalent.
This happens when aspect ratios don't match. Always maintain proportions or crop to fit rather than stretching.
16:9 is the current standard for most displays and video content, offering the widest compatibility.
Crop for social media and mobile, letterbox for cinema and professional video. Consider the content's focal point.
Create a master file with extra space around subjects, then crop specific versions for each platform's requirements.
1:1 (square) for posts, 9:16 (vertical) for Stories and Reels, 16:9 for IGTV landscape videos.
Your video is likely 16:9 (horizontal) being viewed on a 9:16 (vertical) mobile screen. Create vertical versions for mobile.
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