Finding size of all tables

[mdjks]

I have a database that contains more than 80 tables. Is there a way to tell the size of each table without having to run individual querries?

One of them is growing abnormally during the daily update process and I'm having trouble identifying which one it is.

I was hoping size information might be available in the system tables but if so, I can't figure out where. I've looked in all of them and nothing appears to be size related.

Thanks in advance.