FIDE Chess Rating Calculator is a simple tool for chess players who want quick rating estimates based on FIDE rating calculations.
Calculate your expected rating change for a single game by entering your rating, your opponent’s rating, the game result, and the K-factor. The app shows the estimated gain or loss immediately.
You can also estimate an initial FIDE rating by entering the average rating of your opponents, your total score, and the number of games played.
Features:
Estimate rating gain or loss for wins, draws, and losses
Select K-factor values of 10, 20, or 40
Use FIDE expected-score calculations
Estimate an initial FIDE rating for unrated players
Clear, focused interface for quick calculations
This app is an independent calculator and is not affiliated with or endorsed by FIDE.
Calculate FIDE chess rating changes and estimate initial ratings instantly.