How small is it?

Ok, so I'm looking at apartments this week. I am going to see a studio that is 250 to 300 square feet. Just to give you a point of reference, one of those litterboxes with the little roof on it is, I believe, 200 square feet.

For those of you using the metric system, that translates to something like 25 cubic hectares per liter*.

Ok, I have no idea how to convert a room that I'm standing in into square footage. Unless the room is one square foot in size, in which case I might be able to fit in there for a little while, but I would probably have to get there via a high school football player locker room hazing sort of deal. And I'm fine with that, as long as I don't have to pay a realtor's fee.

*That's in Kelvin, I believe.