Chess.com and Lichess.org Rating Comparisons

It's updated and more accurate than ever! We have pulled down a list of players with both chess.com and lichess.org ratings, subset them to only ratings with RD values < 150, and created formulas to convert the ratings. An RD value < 150 means the player is fairly active in that rating category. Each column compares between 55 and 130 players! Thanks Jesse for writing the code to pull down the ratings. CHESS.COMBLITZLICHESSBLITZ(+/- 135)LICHESSBULLET(+/- 165)LICHESSRAPID(+/- 135)LICHESSCLASSICAL(+/- 130)80011501260900122513651000130012251365146011001380130514551550115014151340150015901200145513801540163012501495142015801670130015301460162017101350157014951660174514001610153517001780145016451575173518101500168516151770184515501725165018051870160017601690184019001650180017301870192517001840177019051950175018751805193519751800191518451960199518501955188519902015190019901925201520351950203019602040205020002070200020652065210021452080211020902200222021552150211023002300223521902400237523102220

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Rating Comparison Updated

The ChessGoals rating comparison page has been updated with over 350 survey respondents. Here is the methodology for creating the comparison table for Chess.com Bullet: Use chess.com blitz ratings as the independent variable since most players have a chess.com blitz ratingOnly keep players who have chess.com blitz and chess.com bullet ratingsPlot the chess.com blitz ratings (x) vs chess.com bullet ratings (y) and remove outliersCreate a formula that's either linear or 2nd order polynomial, based on which matches the data bestOn the comparison table calculate the predicted chess.com bullet rating for…

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