|Indicates the area covered by an object.|
|Used on these elements|
|Tools for this tag|
The sqkm=<number> key can be used to indicate the area covered by an object (in unit square kilometre = sqkm). E.g. place nodes (like continents or oceans) or any huge object have no good way to calculate their size.
Whenever possible, it is recommended to also add the key source:sqkm=* to the same object.