Aspect Ratio Calculator
Find the aspect ratio of a width/height, or calculate a new size that keeps the same proportions.
Free to useNo software to install — works in any modern browser.
No signup neededOpen the tool and start straight away.
Runs in your browserNothing you enter is sent to a server.
Works on mobileSame tool on your phone, tablet or desktop.
How it works
- Enter — type or paste your values or text.
- Get the result — it is worked out in your browser.
- Adjust — change the inputs to compare, or copy the result.
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About Aspect Ratio Calculator
Enter a width and height to find the simplified ratio (like 16:9), or enter a new width to see the exact height that keeps the same proportions — useful before resizing an image or setting up a video export without stretching anything.
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