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Aspect Ratio Calculator
What Does This Tool Do? Calculate new width and height dimensions while preserving the original aspect ratio.
Aspect Ratio Calculator User Guide
Calculate a new height that preserves the original aspect ratio.
Enter original width, original height and new width in the same unit.
Sample Input and Results
For a 1920 by 1080 original and a new width of 800, the new height is 450.
How Calculations & Processing Work
New height = new width × original height / original width. The original ratio is reduced by the greatest common divisor.
When Using the Results
This calculates dimensions only. It does not resize or crop an image file.
Calculator
Enter only the required numbers to update the results panel automatically.
Enter the required numbers to calculate the result.