*1st submission in like forever* 8D
Although I originally developed this as a tool for a larger project I intend to do, the question has been around my head for quite a while. What is the real size difference between the Hetalia characters?
Let me explain my train of thought with a simple example
Lets say we have 2 squares, one 2 units tall (A) and the other 4 units tall (B). We can say B is twice the size of A, but that's only when we compare their heights.
If we were to compare the areas instead, A has 4 units and B has 16. In other words B is actually 4 times larger than A. And if they were cubes instead of squares B would be 8 times larger than A.
Considering the size of the countries measures the area, if we were to know the difference between their heights we would need to calculate their square roots to find how tall they are before comparing them.
And since the Hetalia characters are humans, and not just surfaces, that means their area is actually their volume, so we would have to work with cube roots instead.
So instead of calculating everything by hand, here's an application that visually shows you the height difference automatically. I've kept the "linear, area and volume comparisons just for the kicks
[EDIT 23/11/13]: More countries added >D