You have to lose twice to be out. Enter your players to seed the winners bracket (byes handled), plus the losers-bracket and grand-final structure. Free, printable, no signup.
Double elimination is the fairest knockout format because a single bad game doesn't end your day: you have to lose twice to be eliminated. Everyone starts in the winners bracket. Lose once and you drop to the losers bracket (a.k.a. the back draw or consolation bracket); lose there and you're out. The unbeaten winners-bracket champion faces the losers-bracket survivor in the grand final.
As with single elimination, if your entrant count isn't a power of two the field is padded up and the top seeds get first-round byes β handled automatically above.
The winners-bracket finalist arrives with zero losses; the losers-bracket finalist has one. If the losers-bracket player wins the first grand final, both now have one loss, so a deciding reset game is played. That's why double elim runs about 2N β 2 games (up to 2N β 1 with a reset).
Seeding the winners bracket is easy (done above). The hard part is the losers-bracket drop pattern β which loser goes to which losers-bracket game each round so the same two players don't rematch too early. That bookkeeping is exactly what the free PlanMyPickle app automates: it wires the whole double-elimination bracket, advances and drops players live, and handles the grand final and reset for you.
A free tool from PlanMyPickle. See also: single-elim bracket generator Β· round robin generator Β· tournament time calculator.