Square and rectangle decals are measured by their width and height.

    Width: The width is the measurement from the left edge to the right edge of the square.
    Height: The height is the measurement from the top edge to the bottom edge of the square.
A round decal is typically measured by its diameter, which is the distance across the widest point of the circle, passing through its center..
Decal sizing information typically includes the dimensions of the decal, which are usually provided in terms of width, height, or diameter, depending on the shape of the decal. Below you will find more information on decal sizing:
Decal sizing Information