Bounding Box

A bounding box (usually shortened to bbox) is an area defined by two longitudes and two latitudes, where:

• Latitude is a decimal number between -90.0 and 90.0.
• Longitude is a decimal number between -180.0 and 180.0.

They usually follow the standard format of left,bottom,right,top.

For example, Greater London is enclosed by the [bbox=-0.489,51.28,0.236,51.686].

bbox = min Longitude , min Latitude , max Longitude , max Latitude

The export tab on the main website allows you to draw a box, and the coordinates of the edges are shown to you.

In a WikiProject having a params sub-page, you can get the bounding box by using the template pBbox.