Tournament Bracket Calculator
Work out the rounds, matches, byes and games per team for single elimination, double elimination or round-robin tournaments, free online.
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Single elimination with n teams needs n − 1 matches and ⌈log₂ n⌉ rounds, with byes filling the bracket to the next power of two. Double elimination needs about 2n − 2 matches (2n − 1 if a bracket reset is played). Round robin needs n(n − 1)/2 matches, each team playing n − 1.