Table Tennis Rating Calculator
Calculate your new Elo-style rating after a match or tournament using the USATT/ITTF methodology.
Inputs
Results
New rating
1,516
Rating change
16
How to Use This Calculator
- Enter Your current rating, Opponent rating, and Matches won.
- Set Matches lost, Provisional rating?, and Total tournament games.
- Review New rating and Rating change.
- Use Expected win % and Actual win % to inform your decision.
How the result changes with Your current rating
| Your current rating | New rating | Rating change |
|---|---|---|
| 300 | 396 | 95.8 |
| 1,050 | 1,135 | 84.8 |
| 1,950 | 1,897 | -52.8 |
| 2,700 | 2,668 | -31.9 |
What each input means
- Your current rating
- Your current USATT or club Elo rating.
- Opponent rating
- Average rating of your opponent(s).
- Matches won
- Number of matches you won.
- Matches lost
- Number of matches you lost.
- Provisional rating?
- Set to 1 if you have fewer than 8 rated events (higher K-factor).
- Total tournament games
- Total games played in the event (for context).
What each result means
- New rating
- Your estimated rating after this event.
- Rating change
- Points gained or lost. Positive = improvement.
- Expected win %
- Your predicted win probability based on rating difference.
- Actual win %
- Your actual win percentage in this event.
- Performance rating
- The rating level you played at during this event.
- K-factor used
- The K-factor determines how much each game affects your rating.
- Upset factor
- Positive = overperformed expectations, negative = underperformed.
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.
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