The final tournament has featured between 12 and 24 national teams competing over about one month in the host nation(s). There are two stages: the group stage followed by the knockout stage.
In the group stage, teams are drawn into groups of four teams each. Each group plays a round-robin tournament, in which each team is scheduled for three matches against other teams in the same group. The last round of matches of each group is scheduled at the same time to preserve fairness among all four teams. In the 2015 24-team format, the two teams finishing first and second in each group and the four best teams among those ranked third qualified for the round of 16, also called the knockout stage. Points are used to rank the teams within a group. Since 1994, three points have been awarded for a win, one for a draw and none for a loss (before, winners received two points).
The ranking of each team in each group is determined as follows:
Greatest number of points in group matches
Greatest goal difference in group matches
Greatest number of goals scored in group matches
If more than one team remain level after applying the above criteria, their ranking will be determined as follows:
Greatest number of points in head-to-head matches among those teams
Greatest goal difference in head-to-head matches among those teams
Greatest number of goals scored in head-to-head matches among those teams
If any of the teams above remain level after applying the above criteria, their ranking will be determined by the drawing of lots
The knockout stage is a single-elimination tournament in which teams play each other in one-off matches, with extra time and penalty shootouts used to decide the winners if necessary. It begins with the round of 16. This is followed by the quarter-finals, semi-finals, the third-place match (contested by the losing semi-finalists), and the final.