How accurate is the rating on chess.com?

Hi,

I just reached a rating of 2000 in blitz chess, and wonder how accurate this rating is, in terms of "tournament chess".

I do not play chess in a club, so I always wondered what my rating would be, if I started today. 
Of course I know, that I would not have a rating of 2000 in standard chess on this website. I think it would be about 1800-1850.

From all websites on the internet I find it most difficult to climb on chess.com. Therefore I always assumed it is the most accurate.

So, if you are a club player, what is your actual rating, compared to your rating on chess.com?

Which rating could I have?

Thanks in advance. 

From my experience (and I think others will agree) it's inflated. There are players rated 3000 after all. The higher you go, the more inflated your rating seems to be.