I'm sure I read somewhere that the difference is roughly chess.com = FIDE + 100, but ultimately as they are based on largely different groups of players they're never going to to be totally comparable. Also I think standard play ratings are based on much longer time controls than most games played on chess.com.
Chess.com ratings
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Cann any one please elaborate ,wheather the ratings at Chess.com are close match with Fide ratings or not these are altogather different scales of measuring the Chess IQ.
Thanks