Chess.com ratings to USCF converter

Hi everyone,

This has probably been a forum topic a thousand times, but chess.com do you think that there is a way for chess.com ratings to be converted to unofficial real ratings (like saying someone 1600 online = 1400 real).

I have never understood the rating system, now I just accept the ratings I have and look at my win or lose status instead , although I agree it does seem unfair I dont think there is a system that will suit everybody

Yes, this is the formula:

(USCF + 192) / (age - 16) * 0 + height in cm = chess.com rating.

Trollol

Ratings don't measure strenght, but performance (i.e., there are many variables such as initial rating of a new player, rating's system, time controls, etc. For example USCF uses ELO, while Chess.com uses Glicko).

So it's useless to "convert" them by any mean. But if you really want to know that I suggest you to start a research analyzing the moves of players (let's say 100+ games per rating region) with a top engine and compare the results, although your result will be imprecise and probably there will be no linear relation between two ratings. Good luck! 

Yeah, what if you played badly on purpose on Chess. com and your official rating is over 1500? Also, your official rating starts at 0 and your Chess. com rating starts at 1200

The ratings on chess.com are especially variable with correspondence games because some people take time to analyse whereas others basically blitz out their moves.  This effectively means that different people are playing at different time controls, some people are playing above their OTB strength and others below.

Only real rating is FIDE rating

You can't divide by 0

SilentKnighte5 wrote:

Yes, this is the formula:

(USCF + 192) / (age - 16) * 0 + height in cm = chess.com rating.

Humans can. Computers can't.

It's good to be a human.

Most humans have enough trouble adding 192 to thier USCF, let alone dividing by zero :oP 

Some statistical analysis has been given to answering this question.  I suggestion you search the forums.

In my experience, there is no prescription.  My blitz rating on chess.com is about 50-100 points less than my USCF blitz rating.  I don't have an official blitz rating, but I play in unrated tournaments with players who do, and I use the USCF's calculator to figure out my strength.  My current rating, based on 5 unrated tournaments, is 1723, and my chess.com rating is about 1680.  My blitz game has always been been 400 points weaker than my classic rating, regardless of OTB or online, except for instantchess.com.

From what I have seen, it seems that the difference between most players' classic USCF rating and their chess.com blitz rating is 300 points, i.e., a player rated 1500 on chess.com's blitz tends to be 1800-ish in USCF's classic time control, but that's not definite.  I can point to extreme variations in this, including one friend who is 2100 in USCF's classic control but who also owns a 1500 chess.com blitz rating.  I think the variation is due primarily to players who get new accounts and to cheating (use of engines); and I realize that there is some decrease in chess.com because of FIDE players, who probably outnumber USCF players.  I also know someone on here who is either consistently cheating with an 1700-ish engine or is legitimately 1700 on chess.com's blitz, yet is 1200 in USCF's classic rating. 

YEs, and they prsented lots of interesting lying numbers. 

I wasn't aware that the numbers were spurious.  What evidence is there to this effect?

The USCF to Chess.com ratings differential has been conclusively proven here:

http://www.chess.com/forum/view/livechess/chesscom-ratings-are-deflated-against-uscf

As said above, Chess.com rating usually equals USCF minus 300.

Well, the attemt is flawed in the first place. You cannot compare 2 different pools of players as well as 2 different time controls.

About like trying to compare basketball players to tennis players.

Also, if the numbers were real, then they would hold true for all players. and work in both directions.

I have a 1200 blitz rating right now. Does that mean I am a 1500+ USCF player? Pretty sure the answer is no.

I'm around 1600 USCF but I've been scratching on 1800 c.c blitz soo...

BTW - I was not referring to the people who have attempted to do this as liars. I was talking about the numbers lying.

A real and more accurate answer is it depends.  The higher your c.c rating, the more likely it's lower than your USCF rating and vice versa.

I see, so since I have a low cc rating, I should have a high USCF rating.

I like your thinking.