Tournament courts and time calculator.

How long will a tournament take?

Each time slot runs as many games as you have courts, but a team can only play one game at a time. So the schedule is built round by round. A round robin with n teams has at most ⌊n/2⌋ games per round, so more courts than that add nothing. In single elimination the first round has n − (bracket size)/2 games and each later round halves.

Total time is the number of slots times (game length + changeover), minus the last changeover. Slots are the sum over rounds of games in that round divided by the courts, rounded up. Double elimination depends on how matches fall, so the result there is a best-case lower bound from total games divided by courts.

Worked example. 8 teams, single round robin, 2 courts, 30 minute games and 5 minute changeovers: 28 games over 7 rounds of 4; each round needs 2 slots, so 14 slots of 35 minutes = 485 minutes (8 h 5 min). With 4 courts it falls to 7 slots, 240 minutes. This estimate ignores rest time between a team's games, warm-ups and delays.