Aspect Ratio & Image Scaling Calculator

Graphics, Photo & Design
14 calculations
Having trouble? Go to tutorial
📝 How it works:
Calculate aspect ratio (e.g. 16:9) and scale images proportionally: new width or height while keeping the ratio.

Fill in the fields below and click "Calculate".
for proportional scaling
for proportional scaling

The aspect ratio describes width to height (e.g. 16:9). When scaling, it is preserved if both edges are multiplied by the same factor. The calculator reduces the ratio (using the greatest common divisor) and derives the matching second edge from one new edge - without distortion.

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