Boxing Weight Classes

Boxing weight classes are a way of ensuring that boxers of similar size and weight are matched up.

While one can argue that a true champion would fight anyone, fighting within one's weight class makes for better fights.

Bigger boxers have more natural weight behind their punches. Heavyweights tend to inflict more knockouts but the fighters tend to be slower. Featherweights, on the other hand, are blindingly fast.


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Dividing up boxing into weight classes helped to reduce the number of lop sided victories and the ability of boxers to pick on smaller opponents.

It is not uncommon for boxers to move into and out of weight classes. As they grow older, they could move from middleweight to light heavyweight in order to challenge themselves more or to take a title in two different weight classes. Nothing says one has to stay in one class for one's entire career. If one can add or lose the weight, one can fight in whatever class one wants.

What are the Boxing Weight Classes?

Boxing weight classes vary depending on whether one is talking about professional boxing or amateur boxing. The below charts will give you the upper and lower limits for amateurs and professionals.

PROFESSIONAL BOXING

Weight limit
(lb / kg)
WBA WBC IBF WBO BoxRec
unlimited Heavyweight Heavyweight Heavyweight Heavyweight Heavyweight
200 / 90.7 Cruiserweight Cruiserweight Cruiserweight Junior heavyweight Cruiserweight
175 / 79.4 Light heavyweight Light heavyweight Light heavyweight Light heavyweight Light heavyweight
168 / 76.2 Super middleweight Super middleweight Super middleweight Super middleweight Super middleweight
160 / 72.6 Middleweight Middleweight Middleweight Middleweight Middleweight
154 / 69.9 Super welterweight Super welterweight Junior middleweight Junior middleweight Light middleweight
147 / 66.7 Welterweight Welterweight Welterweight Welterweight Welterweight
140 / 63.5 Super lightweight Super lightweight Junior welterweight Junior welterweight Light welterweight
135 / 61.2 Lightweight Lightweight Lightweight Lightweight Lightweight
130 / 59.0 Super featherweight Super featherweight Junior lightweight Junior lightweight Super featherweight
126 / 57.2 Featherweight Featherweight Featherweight Featherweight Featherweight
122 / 55.3 Super bantamweight Super bantamweight Junior featherweight Junior featherweight Super bantamweight
118 / 53.5 Bantamweight Bantamweight Bantamweight Bantamweight Bantamweight
115 / 52.2 Super flyweight Super flyweight Junior bantamweight Junior bantamweight Super flyweight
112 / 50.8 Flyweight Flyweight Flyweight Flyweight Flyweight
108 / 49.0 Light flyweight Light flyweight Junior flyweight Junior flyweight Light flyweight
105 / 47.6 Minimumweight Strawweight Mini flyweight Mini flyweight Minimumweight

AMATEUR BOXING

Class name Weight class limit (kg)
Men (old) Men (new) Women (old) Women (new) Junior
Super heavyweight Unlimited Unlimited
Heavyweight 81–91 81–91 Unlimited Unlimited Unlimited
Light heavyweight 75–81 75–81 75–81 75–81 75–80
Middleweight 69–75 69–75 69–75 69–75 70–75
Light Middleweight 66–70
Welterweight 64–69 64–69 64–69 64–69 63–66
Light welterweight 60–64 60–64 60–64 60–64 60–63
Lightweight 57–60 56–60 57–60 57–60 57–60
Featherweight 54–57 54–57 54–57 54–57
Bantamweight 51–54 52–56 51–54 51–54 52–54
Light Bantamweight 50–52
Flyweight 48–51 49–52 48–51 48–51 48–50
Light flyweight 46–48 46–49 46-48 45-48 46-48
Pinweight 44–46 44–46

Charts courtesy of Wikipedia.

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