Aspect Ratio Calculator
Ratio Results
Detected Aspect Ratio:
16 : 9
Dimension Status:
Enter a new width or height above.
Description
The Aspect Ratio Calculator is a free digital tool designed to help creators find equivalent box dimensions when scaling visual media up or down. By maintaining the exact proportional relationship between width and height, it ensures that your images, graphics, and videos do not warp, stretch, or pixelate during the resizing process.
How This Calculator Works
The code uses basic cross-multiplication math and greatest common divisor (GCD) logic to deliver results instantly:
- Detecting the Ratio: The system divides your original width and height by their greatest common divisor to simplify the ratio. For example, 1920 and 1080 both divide by 120, yielding the clean 16:9 aspect ratio display.
- Predicting Dimensions: If you input a new Width, the algorithm multiplies it by the original height and divides it by the original width to calculate the matching Height. The inverse is applied if you input a new Height.
How to Use This Tool
- Enter the Original Dimensions or base ratio of your image (it defaults to 1920x1080).
- To find a new height, simply type your target width into the New Width box. The script will output the needed height instantly in the other box.
- To find a new width, type your target height into the New Height box instead!