Glossary of Judo terminology

Matches by weight class

Matches by weight class

As late as 1997, the weight divisions for contests within Japan differed from those of international contests, but in 1998, the Japan weight divisions were revised to correspond to the international weight divisions (7 divisions)

[Men] 60kg or less, 66kg or less, 73kg or less, 81kg or less, 90kg or less, 100kg or less, over 100kg.
[Women] 48kg or less, 52kg or less, 57kg or less, 63kg or less, 70kg or less, 78kg or less, over 78kg.

The above weight division system is used at the annual All Japan Judo Weight-Class Championships, and, in the year of an Olympiad or a World Judo Championships event, the winners of these weight divisions at the All Japan Judo Championships are selected as Japan's representatives to those international events. Moreover, there is also an "open weight" division (no weight restrictions) at the World Judo Championships which is held every two years. There is also an "open weight" division in the annual All Japan Judo Championships, at which the Japan champion is determined. In the year of an Olympiad or a World Judo Championships event, Japan's heavyweight division representatives to those events are selected at the All Japan Judo Weight-Class Championships. For the men, representatives are selected for the 100kg and less, the over 100kg, and the open-weight divisions. For the women, representatives are selected for the over 78kg and the open-weight divisions.