Muay Thai Weight Classes

Table of Contents

Muay Thai is a martial art and combat sport that originated in Thailand. It is known for its powerful strikes, clinching techniques, knees, elbows and kicks. In Muay Thai competitions, fighters are divided into weight categories, or weight classes, to ensure fairness and safety.

The weight classes in Muay Thai are based on weight in pounds (lbs) and kilograms (kg). The divisions are as follows:

1. Strawweight: Up to 105 lbs (47.6 kg)
2. Flyweight: 105-112 lbs (47.6-50.8 kg)
3. Bantamweight: 112-118 lbs (50.8-53.5 kg)
4. Featherweight: 118-126 lbs (53.5-57.2 kg)
5. Lightweight: 126-135 lbs (57.2-61.2 kg)
6. Super Lightweight: 135-140 lbs (61.2-63.5 kg)
7. Welterweight: 140-147 lbs (63.5-66.7 kg)
8. Super Welterweight: 147-154 lbs (66.7-69.9 kg)
9. Middleweight: 154-160 lbs (69.9-72.6 kg)
10. Super Middleweight: 160-168 lbs (72.6-76.2 kg)
11. Light Heavyweight: 168-175 lbs (76.2-79.4 kg)
12. Cruiserweight: 175-200 lbs (79.4-90.9 kg)
13. Heavyweight: Over 200 lbs (90.9 kg)

In this article, we’ll discuss the weight classes in Muay Thai, how they affect fighters, and the strategies and training techniques needed to succeed in each division.


What are the weight classes in Muay Thai?

The weight classes in Muay Thai are designed to create an even playing field and ensure that fighters of similar size and weight compete against each other. When fighters are matched properly in terms of size, they can perform at their best and reduce the risk of injury.

Muay Thai has 13 weight classes ranging from 105 lbs to over 200 lbs. Fighters must weigh in before the fight to ensure that they meet the weight requirements for their chosen weight class. If a fighter does not meet the weight requirements, they may face penalties or be unable to compete.


How do the weight classes affect fighters?

The weight class that a fighter competes in can have a significant impact on their performance. Fighting in a weight class that is too heavy or too light can be detrimental to a fighter’s speed, strength, and endurance.

In a weight class that is too heavy, a fighter may struggle to maintain their energy and tire more quickly. They may also be at a disadvantage in terms of agility, as heavier weight classes often have fighters with more mass and less flexibility.

In a weight class that is too light, a fighter may face opponents who are much stronger and more powerful. In addition, the reduced body mass can mean that a fighter will have a harder time absorbing strikes and maintaining balance.


What training techniques are needed for each weight class?

The training techniques needed for each weight class can vary based on the unique demands of the division. Fighters need to tailor their training regimen to their respective weight class, focusing on developing the skills and physical attributes necessary to perform at their best.

For example, a fighter in the lightweight division may need to focus on speed and agility to outmaneuver their opponents. They may also need to prioritize endurance training to be able to maintain their energy levels throughout the fight.

On the other hand, a fighter in the heavyweight division may need to prioritize developing their strength and power. They may also need to master moves that can help them control the center of the ring and avoid being pushed back by their opponent’s force.


How can fighters integrate proper diet and nutrition into their training regimen?

Diet and nutrition play a critical role in a fighter’s ability to compete at their best. Eating the right foods and maintaining a healthy weight can help fighters improve their strength, endurance, and overall performance.

Fighters should prioritize consuming a diet rich in lean protein, complex carbohydrates, and healthy fats. They should also aim to hydrate consistently before, during, and after training and competition.

To maintain a healthy weight and meet the requirements for their chosen weight class, fighters may also need to monitor their calorie intake and adjust their diet accordingly. A registered nutritionist can provide guidance on how to develop a diet that aligns with a fighter’s training goals and weight class.


How do fighters engage in striking techniques within their weight class?

Each weight class has its own unique requirements and style of striking. Fighters need to develop a robust set of striking techniques that aligns with their weight class and opponent’s fighting style.

For example, fighters in lighter weight classes may rely heavily on elbow strikes, knees, and quick jabs to overcome their opponents. Meanwhile, fighters in heavier weight classes may focus on powerful punches and kicks to secure the win.

To improve their striking techniques, fighters need to build strong muscles in their arms, legs, and core. They also need to practice proper form and technique to maximize the impact of their strikes.


How do fighters engage in clinching techniques within their weight class?

Clinching is a critical aspect of Muay Thai that involves controlling and manipulating an opponent’s body. Clinching techniques can be used to neutralize an opponent’s striking ability, deliver powerful strikes of their own, and gain an advantage in the fight.

Each weight class has its own unique style of clinching, which requires fighters to have control, balance, and strength. Fighters need to engage in clinching drills and practice the proper grips, throws, and knees, specific to their weight class to enhance their technique.

To succeed in the clinch, fighters need to have powerful legs for balance and upper body strength to control their opponent. They also need to be able to move smoothly and quickly to maintain a dominant position.



In conclusion, the weight classes in Muay Thai are designed to ensure fairness, safety, and an even playing field for fighters of various sizes and weights. Fighters need to tailor their training regimens to their respective weight class and focus on developing the skills and physical attributes necessary to excel. With the right training, nutrition, striking, and clinching techniques, fighters can compete successfully in their chosen weight class and become a champion in the sport.

Maxim Tzfenko

Maxim Tzfenko

"I live and breath Martial Arts"

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