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Ratio and aspect-ratio calculator
Simplify a ratio and calculate proportional dimensions.
Text and numbers
Text
Browser only
Your input and output are processed in this browser. They are not uploaded for processing. No account is required.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter the requested values: First side / width; Second side / height; New first side / width.
- Choose Calculate and review the result.
- Download the text result if useful. Reset restores the initial inputs and clears the result.
Examples
1920:1080 simplifies to 16:9; width 1280 gives height 720.
Limitations
Runs entirely in your browser. Numeric calculations use IEEE-754 floating-point arithmetic; displayed values are rounded to 15 significant digits unless stated otherwise.
Source sides must be positive whole numbers. Calculated target dimensions may be fractional.
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