Chess Fide Rating Calculator APK for Android Download
Elo rating system - Wikipedia
ChessDojo on Twitter: "@DadLifeChess Uh oh, we were worried more people would start playing with the rating calculator rather than working on their chess!" / Twitter
In April 2014, Carlsen's 100-game performance rating reached 2900 for a duration of 2 games (likely the only time in history that this has been achieved). : r/chess
How do you calculate your Tournament Performance Rating? - Chess Stack Exchange