Chess ELO Rating Calculator

Chess ELO Rating

Calculate your expected new ELO rating after a chess match based on both players ratings and the match outcome using the standard ELO formula.

Your Current Rating

Opponent Rating

Match Result

K-Factor

Formula

Expected Score = 1 / (1 + 10^((Opponent Rating - Your Rating) / 400)); Rating Change = K x (Actual Result - Expected Score); New Rating = Current Rating + Rating Change

Frequently Asked Questions

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