Reference articles on history, science, culture and more
Encyclopedia

Weight class

Divisions to match sizes of opponents

Weight classes are divisions of competition used to match competitors against others of their own size. Weight classes are used in a variety of sports including rowing, weight lifting, and especially combat sports such as boxing, kickboxing, mixed martial arts, wrestling, and Brazilian jiu-jitsu. Alternatives to formal weight classes include catch weight and openweight.

The existence of weight divisions gives rise to the practice of weight cutting. To be the largest individual in a weight division is perceived as advantageous; therefore many athletes lose weight through dieting and dehydration prior to weigh-ins to qualify for a lower weight class.

01Comparison

Below are selected maximum weight limits for the major classes in different sports.

DivisionsBoxingMMAKickboxing (ONE)BJJ Judo
Heavyweight None 120.0 kg (264.6 lb) 120.2 kg (265.0 lb) 94.3 kg (207.9 lb)
Light heavyweight79.4 kg (175.0 lb)93.0 kg (205.0 lb)102.1 kg (225.1 lb)88.5 kg (195.1 lb) 100 kg (220.5 lb) (half-heavyweight)
Middleweight72.6 kg (160.1 lb)83.9 kg (185.0 lb)93.0 kg (205.0 lb)82.3 kg (181.4 lb) 90 kg (198.4 lb)
Welterweight66.7 kg (147.0 lb)77.1 kg (170.0 lb)83.9 kg (185.0 lb)
Lightweight61.2 kg (134.9 lb)70.3 kg (155.0 lb)77.1 kg (170.0 lb)76 kg (167.6 lb) 73 kg (160.9 lb)
Featherweight57.2 kg (126.1 lb)65.8 kg (145.1 lb)70.3 kg (155.0 lb)70 kg (154.3 lb)
Bantamweight53.5 kg (117.9 lb)61.2 kg (134.9 lb)65.8 kg (145.1 lb)57.5 kg (126.8 lb)
Flyweight50.8 kg (112.0 lb)56.7 kg (125.0 lb)61.2 kg (134.9 lb)
Watch videos about Weight classExplainers and documentaries on YouTube (opens in a new tab)

Sources and credits

This article is adapted from the Wikipedia article Weight class, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

Fathomly is not affiliated with or endorsed by the Wikimedia Foundation. Spotted a problem? Tell us.