It does in fact give you the diameter, sides, and area of a hexagon.

I love how delightfully useful this is while also being the simplest sort of tool. It's a simple visualization of a math formula. Plug in the variables, rock and roll. Being the sort of person who lacks the brain space for math I'm obviously a huge fan.

Does what it needs to. I too need this for when I do hexes. You could add another field for the number of hexes and compare the map are to  X square kilometres or however many football fields or say “about the size of France”.

Maybe you could use the shapes from my spherical dungeon template to easily rescale the world.