Chess Rating Performance Calculator

Summary

The Chess Rating Performance Calculator computes your tournament performance rating (TPR) — the theoretical rating a player would need to achieve their exact score against a given set of opponents. Enter each opponent's rating and your result (win, draw, or loss), and the tool calculates your average opponent rating, score percentage, and final performance rating using the standard FIDE formula. This is the most direct way to evaluate how well you played relative to the field.

How it works

1. Add each opponent by entering their Elo rating and selecting your result (Win, Draw, or Loss).
2. The tool lists all games and shows a running summary of your score.
3. Click "Calculate Performance Rating" to compute your TPR.
4. Your average opponent rating and score percentage are calculated first.
5. The FIDE rating differential table is used to convert your percentage score to a performance rating offset.
6. The final performance rating = average opponent rating + differential offset.

Use cases

• Evaluate your overall performance at a rated chess tournament.
• Compare your TPR to your current rating to see if you over- or under-performed.
• Estimate expected rating gain or loss before official FIDE calculations are published.
• Track performance ratings across multiple tournaments to spot trends.
• Assess the strength of the field you played against.
• Use as a coaching tool to set realistic performance targets.

Frequently Asked Questions