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UFC weight classes explained

The eight men's and three women's divisions, their weight limits, round formats and the character of each class.

Last updated 22 October 2026

The eleven weight classes

MMA is divided into weight classes so that fighters of similar size compete against each other. The UFC runs eight men's divisions and three women's divisions. Weights are the upper limit for the division, and fighters weigh in the day before the fight.

DivisionWeight limitKilograms
Women's Strawweight115 lb52.2 kg
Flyweight (men and women)125 lb56.7 kg
Bantamweight (men and women)135 lb61.2 kg
Featherweight145 lb65.8 kg
Lightweight155 lb70.3 kg
Welterweight170 lb77.1 kg
Middleweight185 lb83.9 kg
Light Heavyweight205 lb93.0 kg
Heavyweight265 lb120.2 kg

Non-title fights are scheduled for three five-minute rounds. Title fights and some main events are scheduled for five five-minute rounds. A bout can also be contested at a catchweight, a limit agreed by both fighters outside the normal classes.

What each division is like

Every division has its own character. These are broad tendencies rather than rules, and there are always exceptions.

Flyweight and bantamweight

The lightest men's divisions are the fastest. Fighters tend to throw and move at a high pace, takedown attempts are frequent, and fights often go the distance because there is less single-shot knockout power. Cardio and speed are especially valuable here.

Featherweight and lightweight

Lightweight in particular is widely regarded as the deepest division in the sport, with a large number of elite fighters, which makes it hard to climb. Featherweight is similar. Skills are well rounded at both, so the best fighters are usually complete, with strong wrestling and striking together.

Welterweight and middleweight

Physical size starts to matter more. Wrestling-heavy styles are common at welterweight, and middleweight sits in the middle of the sport's weight range, where both finishing power and grappling control are decisive.

Light heavyweight and heavyweight

The heaviest divisions have the highest knockout rates, because a clean shot from a bigger fighter ends fights quickly. Heavyweight in particular is known for sudden finishes, where one punch can change the whole division.

Women's divisions

The women's strawweight, flyweight and bantamweight divisions follow the same format as the men's, with the same round structure and the same title format. Each has its own rankings and its own champion.

How UNBEATEN uses weight classes

For how a division's real opponents are turned into ratings, see how the simulation works.

Keep reading

How to play
The complete guide from draft to GOAT.
MMA glossary
Terms for the sport and the game.
How the simulation works
How opponents are rated.

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