Professional Boxing Weight Classes in Order from Flyweight to Heavyweight 2026

Quick Answer: Boxing Weight Classes in Order

From lightest to heaviest: Minimumweight (105 lbs), Light Flyweight (108 lbs), Flyweight (112 lbs), Super Flyweight (115 lbs), Bantamweight (118 lbs), Super Bantamweight (122 lbs), Featherweight (126 lbs), Super Featherweight (130 lbs), Lightweight (135 lbs), Super Lightweight (140 lbs), Welterweight (147 lbs), Super Welterweight (154 lbs), Middleweight (160 lbs), Super Middleweight (168 lbs), Light Heavyweight (175 lbs), Cruiserweight (200 lbs), Heavyweight (over 200 lbs).

Here are the standard weight limits recognized by the major sanctioning bodies (WBC, WBA, IBF, WBO).

Women's divisions follow a similar structure with some slight differences in the lighter weights. The most competitive women's classes include flyweight, bantamweight, lightweight, welterweight, and middleweight.

Many top female fighters compete across multiple divisions, similar to their male counterparts.

• Welterweight (147 lbs) — Often called the "glamour division" with stars like Manny Pacquiao, Floyd Mayweather, and Terence Crawford.
• Lightweight (135 lbs) — Known for fast, skilled fighters and exciting matchups.
• Middleweight (160 lbs) — Features powerful punchers and technical masters.
• Heavyweight — The biggest names and highest paydays, though fewer fights due to the physical demands.

Fighters must make the exact weight limit at the official weigh-in, usually the day before the fight. Missing weight can result in fines, loss of title, or cancellation of the bout. After weighing in, boxers rehydrate and can enter the ring significantly heavier than their division limit.

Catchweight bouts are sometimes arranged when fighters cannot agree on a standard division.

What is the lightest boxing weight class?
Minimumweight / Strawweight at 105 lbs (47.6 kg).

What weight class is 147 lbs?
Welterweight – one of the most prestigious and competitive divisions.

How many weight classes exist in boxing?
17 standard classes for both men and women, though some organizations recognize minor variations.

Do women have the same weight classes as men?
Very similar structure and names, with slight differences in some lower divisions.

Why do boxers move up or down in weight classes?
To find better matchups, gain size/power advantages, or extend their careers as they age.

The professional boxing weight class system creates fair and exciting matchups by grouping fighters of similar size and power. From the lightning-fast flyweights to the massive heavyweights, each division has its own unique style and legendary champions. Knowing the order and limits helps fans better appreciate the strategy behind every fighter’s career choices.

Learn more about combat sports with our guide on how UFC fights are scored or explore strength training to support your understanding of the physical demands in boxing.