Aspect ratio calculator
Simplify image ratios and calculate proportional dimensions.
Open toolPercentage calculator
Calculate percentages, relative changes and increases.
Input & settings
Up to 1 MB · stays on this device
Result
Choose your settings and run the tool.
Readable text? Aa Bb 123
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How this tool works
Uses ordinary floating-point arithmetic. Relative change divides by the absolute original value; zero denominators are rejected. Results are general calculations, not financial advice.
Inputs and results stay in this page’s memory until you leave or reset it. Downloads remain on your device. Review the result before using it in another application.