[pop3] Measuring Octets

[Greg Froese]

I've searched the web fruitlessly, so now I come to you, the Pop gurus.
I'm writing a mail client, and I need to know how big an Octet is.

when you log into a pop3 server, it responds with something like

+OK 3 200

meaning you have 3 messages that total 200 octets in size.

so for me to have an accurate display of progress in downloading the
mail.
so if anyone knows, how big is an octet in KB or anything else.

thanks

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Greg