## ELO Probability Table

The following table shows what the probability of beating an opponent is based on the difference between rating points.

Rating diff | Prob win |
---|---|

+800 | 0.99% |

+750 | 1.32% |

+700 | 1.75% |

+650 | 2.32% |

+600 | 3.07% |

+550 | 4.05% |

+500 | 5.32% |

+450 | 6.98% |

+400 | 9.09% |

+350 | 11.77% |

+300 | 15.1% |

+250 | 19.17% |

+200 | 24.03% |

+150 | 29.66% |

+100 | 35.99% |

+50 | 42.85% |

0 | 50.00% |

-50 | 57.15% |

-100 | 64.01% |

-150 | 70.34% |

-200 | 75.97% |

-250 | 80.83% |

-300 | 84.90% |

-350 | 88.23% |

-400 | 90.91% |

-450 | 93.02% |

-500 | 94.68% |

-550 | 95.95% |

-600 | 96.93% |

-650 | 97.68% |

-700 | 98.25% |

-750 | 98.68% |

-800 | 99.01% |

Rating diff = difference between your opponent's rating and yours

Prob win = probability of winning

The left column is the difference between your opponent's rating and your own. +100 means that your opponent
is rated 100 points higher than you. In this case, you have a 35.99% chance of winning. If your opponent is rated the same,
then of course the probability of winning is 50%.

Note that even if you are rated 200 points higher than your opponent, the probability of winning is 76%, which means that you
are expected to lose the game one out of every four times you face such an opponent.