The tournament was played in three different stages (the first, second, and final rounds). In the First Round, the 16 participants were divided into four groups of four teams each. A single round-robin format was played within each group to determine the teams' group position; the three best teams of each group (a total of 12 teams) progressed to the next round.
In the Second round, the 12 teams were divided into two groups of six teams. A single round-robin format was played within each group to determine the teams' group position; matches already played between teams in the First round were counted in this round. The four best teams of each group (a total of 8 teams) progressed to the next round (group winners and runners-up to 1st–4th place semifinals and group thirds and fourths to 5th–8th place semifinals).
The Final round was played in a single elimination format and consisted of two sets of semifinals and finals (one to determine 1st–4th places and the other for 5th–8th places).
For the tournament's final standings, teams that did not reach placement matches were allocated as:[3]
The four teams finishing 4th in each First round pool were ranked 13th.
The two teams finishing 6th in each Second round pool were ranked 11th.
The two teams finishing 5th in each Second round pool were ranked 9th.
Pools composition
The drawing of lots took place on 20 April 1998 in Tokyo, Japan.[4] Teams were seeded in the first two positions of each pool following the Serpentine system according to their FIVB World Ranking. FIVB reserved the right to seed the hosts as head of Pool A regardless of the World Ranking. All teams not seeded were drawn to take other available positions in the remaining lines.[5] The number after the team's name reflect its FIVB World Ranking in October 1998.[6]
The results and the points of the matches between the same teams that were already played during the first round are taken into account for the second round.