In the “Sweet Science,” fairness is everything. To ensure that skill, technique, and heart are the deciding factors—rather than just sheer size—boxing is divided into weight classes. Whether you’re a fan watching from the stands or an aspiring fighter stepping into Champions Gym Perth for the first time, understanding these divisions is key to understanding the sport.

Below is a breakdown of the traditional professional boxing weight classes, from the lightning-fast Strawweights to the titans of the Heavyweight division.

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The Weight Class Breakdown

The Heavy Hitters

• Heavyweight (Unlimited): The “Glamour Division.” There is no upper limit here. This class is home to the biggest punchers in the world, where one clean shot can end a fight instantly.
• Cruiserweight (200 lbs / 90.7 kg): A fast-paced bridge between the light heavyweights and the giants. These fighters possess heavyweight power but often maintain the agility of smaller men.
• Light Heavyweight (175 lbs / 79.4 kg): Historically one of the most exciting divisions, blending devastating knockout power with high-level technical boxing.

The Mid-Range Gladiators

• Super Middleweight (168 lbs / 76.2 kg): A division known for intense rivalries, these fighters are big enough to pack a punch but lean enough to maintain a blistering pace for 12 rounds.
• Middleweight (160 lbs / 72.6 kg): Often considered the “perfect” boxing weight. Middleweights are the ultimate hybrid of speed, strength, and endurance.
• Super Welterweight / Junior Middleweight (154 lbs / 69.9 kg): A highly technical class where fighters are exceptionally lean and rely on surgical precision.
• Welterweight (147 lbs / 66.7 kg): Arguably the most talent-rich division in history. It requires an elite engine and incredible hand speed.

The Speed Merchants

• Lightweight (135 lbs / 61.2 kg): The engine room of boxing. Lightweights are famous for their high-volume punching and relentless pressure.
• Featherweight (126 lbs / 57.2 kg): Fighters in this class move like lightning. Expect incredible footwork and technical wizardry.
• Bantamweight (118 lbs / 53.5 kg): Small in stature but massive in heart. Bantamweights are known for their incredible work rates and durability.
• Flyweight & Strawweight (112 lbs / 105 lbs): The fastest divisions in the sport. These athletes focus on extreme conditioning and “blink-and-you’ll-miss-it” combinations.

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Boxing Weight Class Comparison Table

Use this quick reference guide to see where you or your favorite fighters fit in.

Division Name	Max Weight (lbs)	Max Weight (kg)
Heavyweight	Unlimited	Unlimited
Cruiserweight	200 lbs	90.7 kg
Light Heavyweight	175 lbs	79.4 kg
Super Middleweight	168 lbs	76.2 kg
Middleweight	160 lbs	72.6 kg
Super Welterweight	154 lbs	69.9 kg
Welterweight	147 lbs	66.7 kg
Super Lightweight	140 lbs	63.5 kg
Lightweight	135 lbs	61.2 kg
Super Featherweight	130 lbs	59.0 kg
Featherweight	126 lbs	57.2 kg
Super Bantamweight	122 lbs	55.3 kg
Bantamweight	118 lbs	53.5 kg
Super Flyweight	115 lbs	52.2 kg
Flyweight	112 lbs	50.8 kg
Light Flyweight	108 lbs	49.0 kg
Strawweight	105 lbs	47.6 kg

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Which Weight Class is Right for You?

At Champions Gym Perth, we don’t just teach you how to punch; we help you optimize your body for performance. Whether you want to cut weight safely to compete or build muscle to move up a division, our coaches provide the expert guidance you need.

Pro Tip: Your “walking around” weight is rarely your fight weight. Most athletes compete about 5–10% below their daily weight through structured nutrition and training.

Ready to find your fighting weight?

Book a Consultation or Trial Class at Champions Gym