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Boxing Weight Classes Explained with lb and kg Comparisons

Boxing has always been a sport where skill meets physicality, and that is why weight classes are essential. Fighters compete within their own division to make sure the battles are fair and competitive. With multiple organisations involved, the names and limits can sometimes confuse fans, but every class has a strict maximum weight that fighters must meet at the official weigh in. Understanding these classes helps supporters appreciate the strategy behind choosing the right division.

Each weight category is only separated by a few pounds or kilograms, yet that small difference can mean everything inside the ring. Fighters often move up or down divisions in search of new challenges, world titles or to match opponents more naturally suited to their size. Meanwhile, coming in overweight can lead to cancelled bouts or forced penalties, so discipline becomes as important as punching power.

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All Official Boxing Weight Classes

Boxing weight classes start from the smallest category and progress to the heaviest. Each division has a maximum weight limit that fighters must meet during the official weigh in. If they come in heavier, they may be disqualified or forced to move up to a higher class.

Weight ClassLimit (lbs)Limit (kg)
MinimumweightUp to 105 lbs47.6 kg
Light Flyweight108 lbs49 kg
Flyweight112 lbs50.8 kg
Super Flyweight115 lbs52.2 kg
Bantamweight118 lbs53.5 kg
Super Bantamweight122 lbs55.3 kg
Featherweight126 lbs57.1 kg
Super Featherweight130 lbs59 kg
Lightweight135 lbs61.2 kg
Super Lightweight140 lbs63.5 kg
Welterweight147 lbs66.7 kg
Super Welterweight154 lbs69.9 kg
Middleweight160 lbs72.5 kg
Super Middleweight168 lbs76.2 kg
Light Heavyweight175 lbs79.3 kg
Cruiserweight200 lbs90.7 kg
HeavyweightOver 200 lbsOver 90.7 kg

From the smallest division to the giant heavyweights, each class plays a major role in shaping boxing history. These categories keep competition balanced and help create thrilling matchups across the world. Weight classes are the foundation that allows boxing to remain competitive, strategic and entertaining for every fan watching.

READ MORE: The Different Boxing Title Belts Explained

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