Decision Wheel

Tournament Bracket

Pair up your options head-to-head and find the champion.

Enter between 4 and 32 participants.

How it works

  1. Paste 4-32 participants (one per line).
  2. Hit “Create Bracket”; the names are shuffled and any odd seats become byes.
  3. Click the winner of each match; play moves up the bracket.
  4. When the final is decided, the champion is crowned.

How does a single-elimination tournament work?

A single-elimination bracket is one of the fastest and most thrilling ways to crown a winner. The logic is simple: the loser of every match is knocked out, the winner advances to the next round, and the cycle repeats until just one champion remains standing.

Karar Çarkı's bracket generator takes your list of participants and draws a clean matchup tree for you. The maths behind it is elegant: a tournament of N participants needs exactly N−1 matches to decide a champion. That's because each match eliminates one person, and everyone except the single winner has to be eliminated. An eight-player bracket runs seven matches; a sixteen-player bracket runs fifteen.

What do seeding and byes actually mean?

A well-built bracket rests on two key ideas. The first is seeding: ordering the entrants by strength so that the two strongest don't collide in the very first round. Good seeding saves the most compelling matchups for the semifinals or the final, and it makes the whole event feel fairer.

The second idea is the bye. Brackets fit together most neatly when the number of entrants is a power of two: 4, 8, 16, 32 and so on. When the count isn't one of those, some entrants skip the first round without playing, and that free pass is called a bye. In a six-player tournament, for instance, two players receive byes and advance straight to the second round. Byes are usually handed to the top-seeded players.

Single vs double elimination, and where brackets are useful

In single elimination, one loss is enough and a player is out immediately. Double elimination gives competitors a second chance: anyone who loses once drops into a losers' bracket and can fight back from there. To be crowned champion, a player must be eliminated twice. Double elimination produces fairer results but requires more matches and more time.

This tool is surprisingly versatile:

  • Running gaming and esports tournaments
  • Organising sports fixtures and school or office competitions
  • Making "which is best?" decisions: whittle down a pile of movies, restaurants or songs through head-to-head matchups to find your favourite

That last use is especially fun. Instead of rating a long list one by one, you pit the options against each other and watch which one genuinely rises to the top.

Frequently Asked Questions

How many players does it support?

You can build a single-elimination bracket for 4 to 32 players.

What is single-elimination?

The classic tournament format where losers are eliminated immediately and only winners advance.

How are byes assigned?

If the player count isn't a power of 2 (e.g. 6, 10), automatic byes are given so some players skip the first round.

How do I pick a winner?

Click the winner of each match manually. The bracket updates automatically and the winner advances to the next round.

What happens if my number of participants isn't a power of two?

It's no problem at all. The generator simply awards byes to some players, meaning they skip the first round and advance to the second. The number of byes is whatever it takes to round the field up to the next power of two (8, 16, 32...), and they usually go to the top seeds.

Is seeding required, or can I just arrange entrants randomly?

Seeding isn't mandatory. For a purely equal, just-for-fun bracket, arranging participants randomly is perfectly fine. But when there are clear skill gaps, seeding stops strong players from knocking each other out early and makes for a far more competitive final.

Can I know in advance how many matches will be played?

Yes, the formula is simple: a field of N participants plays exactly N−1 matches. So a 10-player single-elimination event has 9 matches. In double elimination that count roughly doubles, since matches are also played in the losers' bracket.

Does it make sense to use a bracket just to make a decision?

It makes a lot of sense and it's genuinely fun. Comparing a long list of options all at once is hard. Pairing them two at a time and making a single choice each round is much easier for your brain, and it ultimately surfaces your true favourite.