Calculators
Aspect Ratio Calculator
Find the aspect ratio of any width and height (like 16:9), then resize to a new dimension while keeping the same ratio so images and videos never look stretched. Runs in your browser.
New size keeping the ratio: 1280 × 720
Frequently asked questions
How do I find an aspect ratio?
Enter the width and height and the tool simplifies them to the smallest whole-number ratio — for example 1920 × 1080 becomes 16:9.
How do I resize without distortion?
Enter a new width and the calculator works out the matching height (or vice-versa) so the image keeps its original proportions.
What's a common aspect ratio?
16:9 is standard for video and most screens, 4:3 for older displays, and 1:1 for square social posts.
Is it free?
Yes — free and runs entirely in your browser, with no sign-up.
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