Aspect Ratio Calculator
Enter any width and height to get a simplified ratio such as 16:9, its decimal form, orientation, closest common ratio and an optional proportional resize.
Reduce dimensions to an aspect ratio
Get the simplified ratio, decimal ratio, closest common format and a proportional resize without distorting the artwork.
Waiting for real job values
Enter width and height.
What the result is useful for
Use the simplified ratio to match frames, print formats, screens and crop targets; use the proportional resize output when one dimension must change without stretching the artwork.
How the calculation works
The simplified ratio is obtained from width:height while the decimal ratio is width ÷ height; proportional resizing keeps that ratio unchanged.
What this calculator cannot know
The math can describe pixels, PPI and geometry, but it cannot judge subject detail, sharpening, resampling quality, printer process, media or viewing distance. Use the output provider’s requirement when one exists.