Enter the ratings of the players and the K factor in the form below in order to calculate the rating change.
If you do not know the relevant K factor, look at the player’s page on www.fide.com and check the individual calculations for the most recent month for which you can see results.

Elo Rating Change Calculator

This section will calculate the change in a player's Elo rating after playing a single game against another player. The value K is the maximum change in rating.
Player Elo:
Against Elo:
K factor:
Win Draw Loss
Expected Percentage: