Boxing Weight Classes Explained for dummies: Divisions, techniques… and more

By Nika

Boxing is where you have the well-known badge of honor and you earn crowd cheering glory by knocking out your opponents with facial expressions that scream ‘pain’ and ‘precision’. 

Therefore, weight is an accounting factor in ensuring that the fight is fair. 

The factor that supports the equality among the boxers is the weight classes. This means the same sized fighters with similar strength will be able to compete against one another.

The worth of weight classes augment even more when we trace the historical unimaginable triumph of the underdogs. One of the characterizations among the easiest is the one of David the smaller but more dexterous and agile fighter and his triumph over the mighty Goliath. 

Boxing has been the same now and then, where the unexpected win might be the way the fighter utilizes a weight advantage over the opponent to surmount the odds.

Divisions based on weight, into which fighters are grouped as per the weight limits, assist in providing competitive outcomes between individuals who have similar physical strengths. 

The championship position from the lower division featherweight section to the heaviest division of unlimited weight has its stars and title holders. 

While some like Manny Pacquiao are known to have leapfrogged several weight classes, these showcase their ability and competence in the boxing arena.

By taking the difference of size and strength into account and therefore preventing boxers being in an uncomfortable situation due to their origin, weight classes make a fair field for boxers to display their individual talents. 

Whether you are a swift flyweight or knock out as heavyweight, for both types you have its unique style and challenges. 

With that said, let’s dive more into how weight divisions work in boxing. 

The Major Weight Divisions in Boxing

With the main objective being to guarantee the fairness of the fight and safety, boxing rules classify the fighters under a set of weight classes. 

The smallest division is strawweight and the heaviest one is heavyweight. 

At each weight class of boxing there exists a weight limit for all the divisions and the history regarding the class.


The maximum weight allowed for the strawweight class is 105 pounds. 

This is the lightest weight limit of all weight divisions. 

Although it has multiple great fighters, this is one of the most underrated divisions in boxing. 

Fighters like Ricardo Lopez and Kazuto Ioka are just a few examples of those rising to prominence.

Flyweight (Light flyweight/Flyweight/Super flyweight)

The flyweight category (up to 115 pounds), where you can find Jimmy Wilde and Naoya Inoue, famous fighters, and more talented fighters. 

This weight division is most famous for its agile fighters.

Bantamweight (Bantamweight/Super bantamweight)

The next category up is the bantamweight division (up to 122 pounds) which accommodates enormous fighters like Ruben Olivares and Eder Jofre. 

This division is as technical as the lighter divisions.

Featherweight (Featherweight/Super Featherweight)

The featherweight category (up to 130 pounds ), belongs to the high status divisions. 

Fighters such as Salvador Sanchez and Willie Pep have spiced up this weight class by their fast movement and striking power.

Lightweight (Lightweight/Super Lightweight)

One of those who have earned the right to be included in the list of the greatest boxers of all time in these divisions is for example Floyd Mayweather as one of the champions and best fighters in the lightweight category (up to 140 pounds). 

The lightweight fighters are distinguished by their style to retreat or duel with resourceful defense.

Welterweight (Welterweight/Super Welterweight)

The most famous boxer in this category (up to 154 pounds) is most likely Manny Pacquiao. This is the division where he fought the most actually. 

Welterweight fighters are praised for mixing the speed of the light weight classes with the power of the heavier divisions.

Middleweight (Middleweight/Super Middleweight)

The middleweight division (up to 168 pounds) has got its own recognition among the fans. 

The fact that there were top fighters like Marvelous Marvin Hagler and Canelo Alvarez, two of the most experienced, in this class with their strength and agility cannot be denied.

Heavyweight (Light Heavyweight/Cruiserweight/Heavyweight)

Finally, the heaviest weight category is divided into multiple heavyweight groups (up to 200 pounds and higher). 

It is the almighty division, and has seen the giants of boxing. 

Fighters such as Muhammad Ali, and Mike Tyson are given the crown of king here.

Table of Weight Divisions in Boxing (detailed):

DivisionWeight Range (lbs)Weight Range (kgs)
HeavyweightNo limitNo limit
CruiserweightUp to 200Up to 90.7
Light HeavyweightUp to 175Up to 79.3
Super MiddleweightUp to 168Up to 76.2
MiddleweightUp to 160Up to 72.5
Super WelterweightUp to 154Up to 69.8
WelterweightUp to 147Up to 66.6
Super LightweightUp to 140Up to 63.5
LightweightUp to 135Up to 61.2
Super FeatherweightUp to 130Up to 58.9
FeatherweightUp to 126Up to 57.1
Super BantamweightUp to 122Up to 55.3
BantamweightUp to 118Up to 53.5
Super FlyweightUp to 115Up to 52.1
FlyweightUp to 112Up to 50.8
Light FlyweightUp to 108Up to 48.9
Minimumweight (Strawweight)Up to 105Up to 47.6

The Science of Weight Cutting

Weight cutting, also known as death camp,  the boxing technique that is followed by the fighters to deprive their bodies from water in order to qualify for a lower weight class comes under strategic methods. 

This process entails strict calorie counting, very vigorous strength training, and carefully controlled progressive water deprivation in the last days before weigh-in.

Weight reduction gives the fighters an equal or more weighty opponents to compete against who are naturally smaller or weaker than they are, thus the fighters will have the upper hand of beating them in the ring. 

For example, Manny Pacquiao has defeated opponents in different weight classes during his career, and he is undisputed champion in different divisions.

Nevertheless, death camp is characterized by numerous life-threatening effects. 

Muscle cramps, a reduction in cognitive function and, in the long-term, organ damage can be caused by dehydration. 

In addition, the rapid rehydration mechanism during weigh in can expose one to similar risks. 

And during exhausted bouts, fighters go to any lengths including oversupply of water and intravenous drip just to get themselves back in the ring, but what it does to their body is far beyond any limit.

The weight cutting methodology is a controversial topic that experiences regular debates and refinements. 

However, the others suggest toughness in weight glass regulations and hydration tests to prevent safety challenges. 

Whereas, others suggested that there is a need for more medical monitoring as well as education for such fighters on the use of healthy and better fighting techniques. 

Fixing the problems of the weight cut is one of the key factors in the boxers’ health and safety provision.

In the ruthless game of weight cutting, fighters are ready to go to any lengths for being good at their job. Nevertheless, their health should be on a priority list and the best competitions should be found, with the two by two comparisons.

Choosing a Weight Class

Finding the proper weight class for professional boxing can affect the strategic plan of one’s career. 

Boxers have to account for crucial elements such as natural mass, punching force and fighting style to fit in their appropriate weight division. 

Having a different weight category has its benefits and disadvantages, thus a boxer needs to know them to become successful.

For instance, fighters who move up weight divisions put on more muscle and get stronger, translating that they have the power to deliver more effective blows. In the same way, Manny Pacquiao, who started in the low weight ranges, rose to become a multi-weight class holder using his improved speed and power.

Certain boxers even sacrifice their weight in order to dominate fights. Jermell Charlo switched to light-middleweight division, where he became an undisputed champion. As well, Naoya Inoue and Takuma Inoue have both given up their successes in a higher weight class to test their skills and demonstrate their dominance in lower weight classes.

Starting with the right weight class in professional boxing is a very decisive point when it comes to tactical benefits. 

Elements such as inherent size, their punching ability, and the style of combat which they utilize are crucial factors. 

Just picking the perfect set of boxing gloves requires careful consideration, so imagine how difficult it is to select the appropriate weight division.


Boxing weight classes are a significant source of professional boxing, which ensures fairness, safety, and showcases the talented skillsets of the contenders accurately. 

The human element of the sport, as well as the variety of divisions from the smallest junior flyweights to the biggest heavyweights, give it a framework that allows fighters in close weight class to confront each other.

Weight classes are the most significant of the competitive regulations. They keep the match from being in the favor of the boxer with the biggest and strongest opponent, by means of pairing the boxer with opponents who have relatively the same attributes. 

This is also a way of encouraging safety as the fighters are assured of a partner who is a right match as opposed to cases of mismatches that can result in severe injuries. 

Furthermore, weight caps allow fighters to fully exploit their natural gifts and abilities to give themselves an advantage, which creates more entertaining and competitive fights in the ring.

Keeping in mind there is room for adjustments and updates that are a continuous process, the development of weight classes is an ongoing path. 

However, fresh faces appear on the scene and the boxers of different weight classes will move up or down, so changes should be made in order to bid farewell to the new boxers. 

This in a way expands the spectrum of fighters who can contend for more opponents and ultimately provide a pop of variety and thus dynamism in the sport to spectators.

One thing that is anticipated as time passes is the need for more changes concerning weight classes specifically because the sport continues to attract multinational attention as a result of talent explosion. 

Overall, weights do not just represent numbers on a scale but ornaments of self-discovery. 

They balance all these aspects, providing the necessary equilibrium for a perfect game; safety, fair competition, and bringing out the qualities that make some boxers unique. 

Boxing keeps developing and, among other changes, weight classes and their vital role will remain an inevitable feature that will decide this quite interesting and astonishing sport.

Leave a Comment