How can you rank the "circularity" of a polygon? Meaning that having many I wanted to calculate the most similar to a circle...

In general, how do I compare a polygon to another? I have to assess the best site compatibility according to a building design (Comparing the area of the site, with the area of the building)

Thanks

In general, how do I compare a polygon to another? I have to assess the best site compatibility according to a building design (Comparing the area of the site, with the area of the building)

Thanks

For the second part of your post, could you illustrate your buildings and the site polygons to help readers better understand the case? I am not sure if you have the building features already or if you are looking for sites that fit buildings of certain size and shape.