This article is from the Charmed FAQ, by Colin A. McGregor (email@example.com) with numerous contributions by others.
There was one pilot episode filmed (which has not been shown on broadcast
TV), and then 22 episodes each in season 1, 2, 3, 4 and 5 (giving us 110
broadcast episodes or 111 total episodes). As of this writing season 6 is
going into production, and baring disaster we will see a total of 22
season 6 episodes.