Performance rating calculator
This performance rating calculator shows the level you played at in a tournament. Add each opponent's rating and your result. It takes the average rating of your opponents and adds the rating difference that FIDE's table gives for the percentage you scored: 50% adds nothing, 60% adds 72 points, 75% adds 193.
Your games
- 1
Result
Add an opponent's rating and your result.
How it is calculated
- Add up your opponents' ratings and divide by the number of games: that is the average.
- Divide your points by the number of games: that is your percentage score.
- Look the percentage up in FIDE's table (8.1.1) to get a rating difference: 0 for 50%, 72 for 60%, 149 for 70%, 240 for 80%, 366 for 90%.
- Performance rating = average + that difference. For a score of 100% or 0% the table shows 800 only as a notional figure, so the result says little.
Source: FIDE Rating Regulations, table 8.1.1 (FIDE Handbook B.02), read on 2026-11-11. Chesspedition is not affiliated with the federation; its own published figure is the one that counts.
Questions
- What is a performance rating?
- The rating of a player who would be expected to score exactly what you scored against the same opponents. It describes one event, not your strength over time.
- Why is my performance rating so high after winning every game?
- With a perfect score no rating is high enough to make that result "expected", so FIDE's table simply shows 800 points above your opponents' average. Treat it as "at least this".
- Is this the same as a title norm?
- No. A norm needs a performance rating above a set level and also a minimum number of games, titled opponents and players from other federations, under FIDE's title regulations.