A ratio is a relation between two numbers describing how many times the first number contains the second.

In computer graphics and pixel art, the **aspect ratio** describes the relationship between the width and the height of something, for example of a single [[wp>Pixel]], a display or an image.

further reading:
  * [[wp>Pixel_aspect_ratio]]
  * [[wp>Display_aspect_ratio]]
  * [[wp>Aspect_ratio_(image)]]