Round Robin Calculator
How many matches and how long a round robin tournament takes for N players. Formula — N × (N−1) / 2.
Total matches28
Rounds7
Duration (2 courts)4 h 40 min
Reference table: matches by number of players
| Players | Matches | Rounds |
|---|---|---|
| 4 | 6 | 3 |
| 6 | 15 | 5 |
| 8 | 28 | 7 |
| 10 | 45 | 9 |
| 12 | 66 | 11 |
| 16 | 120 | 15 |
| 20 | 190 | 19 |
| 24 | 276 | 23 |
| 32 | 496 | 31 |
How It's Calculated
In a round robin, every player meets every other player exactly once. Total matches: N × (N−1) / 2, where N is the number of players.
Rounds = N − 1 (an odd N adds a bye round for one player). With multiple courts, matches run in parallel, so duration = (matches / courts) × minutes-per-match.