Bit Bit Bit converter

I often get confused what is kb in term of Mb or Gb, as I am joting down RAM or Hardisk size.
All System Information or System Properties (if you are using Windows) can give us is just "1310164kb". 1310164kb? what is exactly 1310164kb?

Well, I stumbled upon this same situation again today, and did a quick google. Look like there a tons of sites helping you to convert this. Most of them are pretty ugly, I would say, but do the job nonetheless.

And so I present to you Bit Calculator, one that I found the look to be less suck. Even giving you the code, in perl.