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Introduction to Chess Ratings
The Elo rating is a relative measure of a chess player's skill. What does Elo stand for and how is a rating calculated?

Tools to Calculate Your Chess Rating
Even if you hate math, you can still calculate chess ratings. First see our Rating Calculator tool. Then see our series on 'Step By Step' Rating Calculation. Do you know that you can use performance ratings to identify your strengths and weaknesses?

Rating Calculator
Just plug in your current rating, your opponents' ratings, and your results. Then click 'Calculate'. The tool will determine your new rating plus show some intermediate numbers used to compute the rating.

Calculate Your Chess Rating (Step by Step)
Calculate your chess rating step by step. If you already have a rating and have just played a chess event, follow each step to calculate your new rating. You don't have a rating? Then calculate your performance rating.

FIDE Top-10 Players (1975-2004)
Since 1970, chess has used the Elo rating system to rank world class players. Using FIDE historical ratings we identify world Top-10 players over a 30 year period.

Back to Basics in Chess Ratings
1. Beyond the Elo System; 2. Ordinal Rating Systems; 3. Interval Rating Systems; and much more...

Chess eXpress Ratings (CXR)
'A chess rating and statistical service which believes that the modern chess player needs to know more than just his or her rating.'

Edo Historical Ratings
'A novel approach to the retroactive rating of chess players over time. Ratings over the whole period are calculated simultaneously by an iterative method treating a single player in different years as separate players, and positing hypothetical drawn self-games between the same player in consecutive years.'

FIDE Historical Ratings
FIDE rating lists 1975-2000, January each year.