An Aspect Ratio Calculator is a tool used to determine the ratio of the width to the height of an image or screen. It helps users understand how different dimensions will affect the appearance of visual content, such as photographs, videos, or digital displays. The aspect ratio is typically expressed as two numbers separated by a colon, like 16:9 or 4:3. Using an aspect ratio calculator is straightforward. Users input the width and height of their image or screen, and the calculator provides the corresponding aspect ratio. This information is essential for ensuring that images fit properly in various formats, such as television screens, computer monitors, or projectors.