Percentage calculator
Calculate percentages, relative changes and increases.
Open toolAspect ratio calculator
Simplify image ratios and calculate proportional dimensions.
Input & settings
Up to 1 MB · stays on this device
Result
Choose your settings and run the tool.
Readable text? Aa Bb 123
Foreground composited on your background
Foreground composited on your background
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How this tool works
Original dimensions are positive integers. New height is shown both exactly and rounded to the nearest whole pixel. This tool calculates dimensions; use Resize image to modify a file.
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.