[RESOLVED] Size of something in bytes?

[MadHatter]

But, as Mutant_Fruit said, it is only the minimum amount of the required memory - there's no guarantee that the IntX type isn't using more. For example, the internal storage could initially be set to an amount that would be reasonable for most of the time (that could be way off from what your method would show for a particular value), and would only be incremented when required.

if you read the original question:

The sizeof operator will give me the size of the type, but that's not what I'm after. I need the size of the data in the variable.

I interpret that to mean he is after how many bytes does the number occupy, which is what I provided.