Aspect Ratio Calculator
Compute CSS aspect-ratio from any width × height, simplify ratios (16:9, 4:3, 1:1, …), find a missing dimension, and copy production-ready CSS/Tailwind/JSX. Live visual preview and a library of common ratios.
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Preview
Result
Ratio
16:9 Fraction
16 / 9 Decimal
1.7778 Common ratios
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