Tournament Bracket Generator
Single- or double-elimination bracket structure from any list of players.
Overview
The Tournament Bracket Generator builds single- or double-elimination brackets from any list of players. Paste a list, pick a format, and the generator lays out the matches across rounds with byes inserted automatically when the player count isn't a power of two. Print or screenshot the bracket for live tournaments, fantasy leagues, or office sports pools.
Bracket structure matters more than people realise: it determines who plays whom, when, and what path a player has to take to win. The generator handles seeding (highest seed vs lowest seed in round one, second-highest vs second-lowest, and so on), bye distribution to keep brackets balanced, and the consolation bracket in double-elimination format.
How it works
For a player count P, the bracket targets the smallest power of two that's at least P, call it 2N. The first round contains 2N matches; players up to count P fill the slots, and the remaining slots are byes (auto-advances). Byes are placed against the top seeds so that round one is the only round where matches are uneven, after which every match has two real players.
Match pairings follow the standard "1 vs 16, 2 vs 15" seeding pattern: the highest seed plays the lowest, the second-highest plays the second-lowest, and so on. This minimises the chance that the top two seeds meet before the final. Double-elimination adds a losers bracket where players knocked out of the winners bracket get a second chance; the losers bracket champion plays the winners bracket champion in the grand final.
Examples
- 8 players, single elimination: 3 rounds (quarterfinals, semis, final), 7 matches total.
- 12 players, single elimination: 4 rounds with 4 first-round byes; 11 matches total.
- 16 players, double elimination: 30 matches total (15 in winners, 14 in losers, 1 grand final).
- 64 players, single elimination: 6 rounds, 63 matches — the standard NCAA Round of 64 bracket.
FAQ
What happens if the player count isn't a power of two?
Byes are inserted in the first round so the top seeds auto-advance into a balanced second round.
How are seeds assigned?
By the order you paste in. The first player is seed 1, the second is seed 2, and so on.
Does double elimination guarantee a fair winner?
Mostly — each player must lose twice to be eliminated. The winners-bracket champion has only one prior loss path, which is sometimes considered an edge.
Can I re-seed mid-tournament?
This generator builds a fixed bracket at the start. Re-seeding is uncommon and would require regeneration.
Does it support round-robin or Swiss?
No — elimination formats only. Round-robin and Swiss are different match-pairing models.