Aspect Ratio Calculator
Find the missing dimension based on your selected aspect ratio. Use shortcuts: Ctrl+C (dimensions), Ctrl+R (ratio), Ctrl+Shift+S (CSS)
About this tool
Calculate image and video dimensions for any aspect ratio, including 16:9, 4:3, 1:1, and 9:16. Free online tool for responsive layouts. Aspect Ratio Calculator runs in the browser on DevTools. There is no signup, and your input stays on this device unless the tool explicitly performs a live network lookup.
What this tool does not do
- Aspect Ratio Calculator is a free in-browser utility, not a hosted API. It does not keep server-side history and is not a substitute for production verification in your own stack.
How do I use this tool?
How do I use Aspect Ratio Calculator?
Open Aspect Ratio Calculator, enter or paste your input, and copy the result. The page works without an account.
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