Elo Rating Calculator

Your details

Single game: one result. Tournament: enter wins, draws, and losses against an average opponent rating.
Your Elo rating before this game or tournament. FIDE provisional ratings start at 1000; Chess.com beginners start around 400-600.
Your opponent's Elo rating before the game.
Win scores 1, draw scores 0.5, loss scores 0.
The K-factor controls how much a single result can move your rating. FIDE uses 40/20/10; USCF uses 32/24/16. A higher K means ratings change faster.
New ratingClass C
1,512.8

Your Elo rating after this game or tournament

Rating change12.8
Expected score0.36
Actual score1
Win probability0.4%
1,512.8
Beginner<1000Class D-E1000-1400Class A-C1400-1800Expert / Master1800-2200Grandmaster2200+

Your rating gained 12.8 points, moving to 1512.8.

  • You outperformed expectations: expected 36.0% of a point, scored 100.0%, so your rating rises.
  • After this result your rating of 1513 places you in the Class C band.
  • With K = 20, the maximum you could gain or lose in one game is 20 points (for a perfect surprise win or loss against an equal).

Next stepTrack your result history over multiple games to see whether your Elo trend is rising, stable, or drifting.

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