Draw a knockout bracket from a list of players or teams. The field is padded to the next power of two with byes, so the bracket is always well formed, and later rounds can be printed blank for filling in as results come.
Settings
Recent results
Generated locally in your browser — your settings and results never leave this page.
Why brackets are powers of two
A knockout bracket halves the field each round: sixteen become eight, eight become four, four become two, and two produce a winner. That only works cleanly when the starting number is a power of two.
Real fields rarely are. The standard solution is a bye — a player paired against nobody, who advances without playing. Padding to the next power of two and filling the gaps with byes keeps the structure intact, which is why a field of thirteen produces a sixteen-slot bracket with three byes.
A bye is a genuine advantage: fewer matches played, less fatigue, and one guaranteed round of progress. In a seeded tournament byes go to the highest-ranked entrants, which is deliberate. In a random draw they fall wherever the draw puts them, and that is worth stating to entrants beforehand so it does not look like a decision.
The match count is fixed
A knockout with n players always needs exactly n minus 1 matches. The reasoning is short: every match eliminates one player, everyone except the champion must be eliminated, so there are n minus 1 eliminations and therefore n minus 1 matches.
This holds regardless of byes, bracket shape or seeding, which makes it a useful sanity check when planning. Thirty-two players means thirty-one matches, and if your schedule has a different number, something is wrong with it.
Random draw or seeded draw
Seeding exists to stop the two strongest entrants meeting in round one. It keeps them in opposite halves so, if form holds, they meet in the final — which is what makes a tournament build rather than peak early.
That requires rankings, and rankings require history. For a club night, a work tournament, or any event where entrants are of broadly similar standard or unknown to each other, there is nothing to seed with, and a random draw is both fairer in appearance and simpler to run.
The trade-off is real: a random draw can put the two best players against each other immediately, and one of them goes out in round one. That is a legitimate outcome of an unseeded format, and telling entrants the draw is random sets the expectation properly.
Knockout is fast, not fair
A single-elimination tournament resolves a large field in very few rounds — sixteen players in four — which is why it dominates events with limited time. The cost is that one bad match ends a run, and the second-best player has a meaningful chance of being eliminated by the best in round two and finishing outside the top four entirely.
Where fairness matters more than speed, a round robin gives everybody the same number of matches and produces a far more reliable ordering. Where both matter, a group stage followed by a knockout is the usual compromise.
Printing the empty rounds
The later rounds are printed blank because a bracket is a live document. Filling in results as they come is how everyone follows the tournament, and a wall-mounted bracket does more for the atmosphere of an event than any digital scoreboard.
If you only need the first-round fixtures — to message them out, say — turning the later rounds off produces a shorter list.
Privacy
Names are processed in your browser. Nothing is uploaded, stored or placed in the page link.
Running the bracket on the day
A drawn bracket is a plan, and plans meet reality. Players withdraw, matches overrun, and someone always arrives late. Deciding beforehand how those are handled saves an argument in the middle of the event.
The usual conventions are simple: a withdrawal before the first round becomes a bye for the opponent, a withdrawal afterwards is a forfeit, and a late arrival is given a fixed grace period announced in advance rather than negotiated on the spot.
Printing the bracket and filling it in as results arrive keeps everyone oriented, and it makes the tournament feel like an event rather than a series of unrelated matches.
How to use the Tournament Matchup Generator
- Paste the players or teams, one per line.
- Choose whether to print the empty later rounds as well.
- Draw the bracket, then export or print it.
Frequently asked questions
What happens when the number of players is not a power of two?
The field is padded with byes to the next power of two. A player drawn against a bye advances automatically to the second round, which is the standard way knockout brackets handle uneven fields.
Is the draw seeded by skill?
No — this is a random draw. Seeding deliberately keeps the strongest entrants apart in the early rounds, which needs rankings the tool does not have. A random draw is the right choice when entrants are of similar standard or when no ranking exists.
How many matches will a bracket have?
One fewer than the number of players, always. Every match eliminates exactly one player and all but the winner must be eliminated, so sixteen players means fifteen matches regardless of how the bracket is arranged.
Why show the empty later rounds?
So the bracket can be printed and filled in as results come. A bracket with only the first round is a list of matches rather than a tournament structure.
Is a knockout bracket the fairest format?
It is the fastest, not the fairest. A single bad match eliminates a player, and the outcome depends heavily on the draw. A round robin is much fairer and takes far longer, which is why knockouts dominate where time is limited.
Can I use it for doubles or team events?
Yes — put the pair or team name on one line. The tool treats each line as a single competitor.
Do the names leave my browser?
No. The player list is processed in the page and is never uploaded, stored or included in the page link. Export or print the bracket to share it, rather than sending a link that would need to carry the names.
Set up a tournament
A draw, a schedule of fixtures, and an order of play.
- Tournament Matchup Generator you are hereDraw the first-round matchups.
- Round Robin Schedule GeneratorBuild a schedule where everyone plays everyone.
- Random Turn Order GeneratorDecide who goes first in each fixture.
