What do you mean by data? Are you talking about just forum posts? Lines of code? Data downloaded by the web browser to visit every page? If it's data downloaded by the web browser, you can do a quick estimation. I visited 5 random full length forum pages (40 posts per page) and recorded the amount of data downloaded by my browser (Safari on OSX). 4.58 MB 4.19 MB 6.25 MB 9.74 MB 4.71 MB (Pretty big discrepancy there. The better way to do this would be to write a web crawler and record 100 or so web pages, but I'm not trying to be too scientific here. This is just for fun.) Averaging out those numbers, we get about 5.89 MB/page +/- 2.29 MB/page. On the front page of the forums, it says that BZP has ~1 070 927 posts. Since there are 40 posts/page, we can say that there are about 26 733 +/- 1 pages). Okay, 26 733 pages +/- 1 pages * 5.89 MB/page +/- 2.29 MB/page = 1574570 MB +/- 61218 MB = 157 GB +/- 61.2 GB (Wow that error propagation!) tl;dr It is unscientifically somewhere between 100 to 200 GB However, this number doesn't have any "practical" use other than just being for fun. If you're trying to find the size of the repo + db in BZP's servers, the number will be significantly smaller. This is because most of the images that caused these bloated forum pages are actually not hosted by BZP themselves. The remaining images (forum headers, proto bars) are only stored once in the server. I'm not sure how much of the forums content is hosted by IPB (do we even still use that lol), because I'm sure a large percentage of content is stored away by them. If you simply want to know the size of the DB that hosts everything, you should definitely ask b6 about that.