Chess Rating Performance and Rating Change Calculators Performance Calculator Win Draw Loss Add Game Your Games: Calculate Performance Rating Tournament Performance: Performance Rating: Average Opponent Rating: Score: / Breakdown: wins, draws, losses FIDE Rating Change Calculator Single Game Tournament Your Current Rating: Opponent’s Rating: Result: Win Draw Loss K-Factor: 40 (New players) 20 (Rating < 2400) 10 (Rating ≥ 2400) Calculate Rating Change: Rating Change: New Rating: Expected Score: Your Current Rating: K-Factor: 40 (New players) 20 (Rating < 2400) 10 (Rating ≥ 2400) Win Draw Loss Add Game Your Games: Calculate Tournament Tournament Results: Total Rating Change: New Rating: Total Score: / Expected Score: