How to convert chess.com rating to Fide and Lichess?

Play classical chess if you want to know it yourself.

I dont know the details, but the ratings on chess.com and lichess.com are all over the place, because they change after every game.

For example Hikaru sometimes simply farms points. He looks for people that he can easily defeat, then keeps playing against them, until the other party gives up. Thus archieving records.

This is possible because ratings arent absolute. For example 100 points of Fide Elo difference is supposed to represent you get 66% of the points. That can mean you win half of the games and draw the other, but it can also mean you win two out of three games, but lose the third, or anything in between. However thats only on average. Any concrete person rated 100 points below you can have far less or far higher success rates against you than to be expected from this difference.

A very simple example for that is overly optimistic players. They may have far better success rates against lesser players, but against stronger players they lose even more.

At one point Hikaru had 3400 blitz rating. Good luck ever getting to 3400 Fide Elo. Unless you're a chess engine, it aint gonna happen.

Thus these ratings are not actually compareable to Fide Elo, which is far more static. Fide Elo only takes into account Fide rated tournaments, which happen far less often.

Both sites obviously try to keep their ratings roughly in the same area as Fide Elo, plus minus a couple hundred points. So in that regard they are somewhat compareable with each other and Fide Elo.

#
Player rapid blitz
chess.com FIDE difference chess.com FIDE difference
Carlsen 2896 2823 73 3253 2886 367
Caruana 2757 2722 35 3036 2770 266
Nakamura 2769 2746 23 3254 2874 380
Abdusattorov 2770 2733 37 3033 2661 372
Giri 2741 2687 54 3087 2715 372
Ding 2719 2818 -99 3128 2787 341
Firouzja 2829 2724 105 3127 2863 264
Nepomniachtchi 2811 2754 57 3088 2800 288
So 2843 2742 101 3030 2767 263
Wei Yi 2740 2743 -3 3107 2984 123
Average 38 304
Standard Deviation 59 80

Conclusions:
chess.com rapid = FIDE rapid + 38
chess.com blitz = FIDE blitz + 304

And don't forget to blundrr check before you move...

my chess . com rapid is 1275 so fide will be 1375