To find out more about ratings see Suggested Reading in the link box to the right. If you don't like math or are looking for a quick way to calculate ratings, see the About Chess rating calculator tool, also in the link box.
The first step in calculating a rating is to note the ratings of your opponents and your result against each. Let's say that your rating is 1500 and that you have just played a 5-round event. (If you don't have a rating, you can still calculate a tentative rating. See performance rating below.)
You won against a player rated 1400, lost to a 1650, won against a 1575, drew with a 1625, and lost to a 1700. We'll summarize your results as +1400 -1650 +1575 =1625 -1700. The following steps will use these as an example.
Do you already have a rating?
- Follow steps 2 through 6 to calculate your new rating.
- Follow steps 7 and 8 to calculate your performance rating.
Knowing your performance rating for an event can be useful even if you already have a rating.
