user4399: Is there any relation or any attempt at discovering a relation between Chess960 ratings and standard chess ratings? This can be for GMs, for (any)M's, for pro players, or for all players on lichess/chess.com (for whatever lichess/chess.com statistics are available), but preferably for as many categories/divisions/what you call it as possible.
I'm looking for something similar to this reddit post: I made a website to compare chess ratings between Chess.com, LiChess, FIDE, & USCF. This way 1 might see eg 9LX ratings on lichess are about 100 points less than standard blitz ratings on lichess or 200 points less than standard rapid ratings on lichess.

Something I thought: I guess there's weekly rating distributions.
For example in the 'week' (whatever this means) of 2021-11-12 13:50:07Z (the time now) 49% is 1575 in 9LX, 50% is 1525 in blitz and 49% is 1525 in rapid. Assuming everyone on lichess plays 9LX, blitz and rapid about the same, I guess this suggests 9LX ratings are about 50 points higher than regular ratings, which of course is not the case.
I guess what would be helpful is seeing the blitz and rapid percentiles conditioned on non-provisional 9LX ratings. Of course there's the lack of time control separation in 9LX ratings. Perhaps we might do some weighted average like if 90% 9LX games are blitz and 10% are rapid then.......idk.

Or if we just assume all the 9LX games are blitz 9LX games, then what if anything do the weekly rating distributions tell us: standard blitz and then 9LX (which we might pretend is 9LX blitz)? For example, here are the rating distributions for this week:

standard:

9LX:


Related:
What are some solutions to a possible/perceived underratedness problem in online chess960?

user30545: Web app called rating correlations is now published in streamlit cloud. It is slow so just be patient, will try to optimize it later.
It can also estimate crazyhouse aside from chess960. Rating data are all from Lichesss.
You can input by double-clicking the number and type your bullet rating for example, the -/+ button is not necessary.
App is updated for performance and source code can be found in github.
Update 1: Can estimate rating based from chess.com users.

url: https://ratingcorrelations.herokuapp.com

4399: <p>Is there any relation or any attempt at discovering a relation between Chess960 ratings and standard chess ratings? This can be for GMs, for (any)M's, for pro players, or for all players on lichess/chess.com (for whatever lichess/chess.com statistics are available), but preferably for as many categories/divisions/what you call it as possible.</p>
<p>I'm looking for something similar to this reddit post: <a href="https://www.reddit.com/r/chessclub/comments/oyjwb1/i_made_a_website_to_compare_chess_ratings_between/" rel="nofollow noreferrer">I made a website to compare chess ratings between Chess.com, LiChess, FIDE, &amp; USCF</a>. This way 1 might see eg 9LX ratings on lichess are about 100 points less than standard blitz ratings on lichess or 200 points less than standard rapid ratings on lichess.</p>
<hr />
<p><strong>Something I thought: I guess there's weekly <a href="https://lichess.org/stat/rating/distribution/chess960" rel="nofollow noreferrer">rating distributions</a></strong>.</p>
<p>For example in the 'week' (whatever this means) of 2021-11-12 13:50:07Z (the time now) 49% is 1575 in 9LX, 50% is 1525 in blitz and 49% is 1525 in rapid. Assuming everyone on lichess plays 9LX, blitz and rapid about the same, I guess this suggests 9LX ratings are about 50 points higher than regular ratings, <a href="https://chess.stackexchange.com/questions/37314/is-there-an-underratedness-problem-in-online-chess960">which of course is not the case</a>.</p>
<p>I guess what would be helpful is seeing the blitz and rapid percentiles conditioned on non-provisional 9LX ratings. Of course there's the lack of time control separation in 9LX ratings. Perhaps we might do some weighted average like if 90% 9LX games are blitz and 10% are rapid then.......idk.</p>
<ul>
<li><strong>Or if we just assume all the 9LX games are blitz 9LX games, then what if anything do the weekly rating distributions tell us</strong>: <a href="https://lichess.org/stat/rating/distribution/blitz" rel="nofollow noreferrer">standard blitz</a> and then <a href="https://lichess.org/stat/rating/distribution/chess960" rel="nofollow noreferrer">9LX (which we might pretend is 9LX blitz)</a>? For example, here are the rating distributions for this week:</li>
</ul>
<p>standard:</p>
<p><a href="https://i.stack.imgur.com/UQs46.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UQs46.png" alt="enter image description here" /></a></p>
<p>9LX:</p>
<p><a href="https://i.stack.imgur.com/Nvuif.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Nvuif.png" alt="enter image description here" /></a></p>
<hr />
<p>Related:</p>
<p><a href="https://chess.stackexchange.com/questions/37314/is-there-an-underratedness-problem-in-online-chess960">What are some solutions to a possible/perceived underratedness problem in online chess960?</a></p>
 30545: <p>Web app called <a href="https://rating-correlations.streamlit.app/" rel="nofollow noreferrer">rating correlations</a> is now published in <a href="https://streamlit.io/" rel="nofollow noreferrer">streamlit cloud</a>. It is slow so just be patient, will try to optimize it later.</p>
<p>It can also estimate crazyhouse aside from chess960. Rating data are all from Lichesss.</p>
<p>You can input by double-clicking the number and type your bullet rating for example, the -/+ button is not necessary.</p>
<p>App is updated for performance and source code can be found in <a href="https://github.com/fsmosca/Rating-Correlations" rel="nofollow noreferrer">github</a>.</p>
<p>Update 1: Can estimate rating based from chess.com users.</p>
<p><a href="https://i.stack.imgur.com/i3x73.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/i3x73.png" alt="enter image description here" /></a></p>
<p>url: <code>https://ratingcorrelations.herokuapp.com</code></p>
