UFC Weight Classes Explained: All 12 Divisions

The UFC has 12 weight classes: eight for men and four for women. The men’s divisions start at flyweight (125 lb / 56.7 kg) and climb to heavyweight (265 lb / 120.2 kg), while the women compete across strawweight, flyweight, bantamweight and featherweight. Every division has a hard upper limit a fighter must hit at the weigh-in, and missing it can cost a purse or a title shot.

Weight classes exist to match fighters of similar size, and in a sport where a punch, kick or takedown from a bigger athlete carries more force, that matching is a safety measure as much as a competitive one. Here is the full ladder in pounds and kilograms, plus how the weigh-in and allowances actually work.

The full UFC weight class table

The UFC follows the Unified Rules of MMA, the framework most North American athletic commissions apply. Each limit is the maximum a fighter can weigh at the official weigh-in.

Division	Men’s limit	Women’s limit
Strawweight	—	115 lb (52.2 kg)
Flyweight	125 lb (56.7 kg)	125 lb (56.7 kg)
Bantamweight	135 lb (61.2 kg)	135 lb (61.2 kg)
Featherweight	145 lb (65.8 kg)	145 lb (65.8 kg)
Lightweight	155 lb (70.3 kg)	—
Welterweight	170 lb (77.1 kg)	—
Middleweight	185 lb (83.9 kg)	—
Light Heavyweight	205 lb (93.0 kg)	—
Heavyweight	265 lb (120.2 kg)	—

The men’s ladder has eight rungs; the women’s has four. The UFC has never run a men’s strawweight division, and the women’s roster tops out at featherweight, so the overlap between the two is only in the middle bands.

How the limits work at the weigh-in

A fighter has to be at or below their division’s limit when they step on the scale. For a non-title bout, the Unified Rules grant a one-pound allowance, so a welterweight can weigh in at up to 171 lb (77.6 kg) rather than a strict 170. Championship fights remove that cushion entirely: the fighter must be on the limit or under, with no margin.

Miss weight and there are consequences. The fighter usually forfeits a percentage of their purse to the opponent, the bout may be reclassified as a catchweight, and a champion who misses can be stripped of the belt on the scale while the challenger can still win it. The competitor who made weight keeps their title-eligibility.

Weigh-ins for UFC events generally take place the morning before the fight. That timing is deliberate: it gives fighters most of a day to rehydrate after a hard cut, so a lightweight who scales 155 lb in the morning may enter the cage the next night closer to 170. Commissions have pushed toward earlier weigh-ins precisely to reduce the danger of extreme, last-minute dehydration.

Why the men’s and women’s ladders differ

The women’s divisions cluster at the lighter end because the UFC built them around its most populated talent pools. Strawweight and flyweight are the deepest, bantamweight is competitive, and featherweight has historically been the thinnest of the four. The men’s classes stretch far higher because the physical range of male competitors is wider, all the way to the 265 lb heavyweight cap.

That heavyweight ceiling is worth noting. Unlike professional boxing, which leaves its heavyweight division open with no upper limit, the UFC caps heavyweight at 265 lb. A fighter heavier than that has to cut down to compete, and there is no super-heavyweight tier above it.

Champions who cross divisions

Fighters are not locked to one class. Moving up is common when a weight cut becomes unmanageable, and moving down happens when a smaller athlete wants a title in a thinner field. A handful of stars have held two belts at once — the “champ-champ” — by defending a title in one division while winning another. The physical demands differ sharply: climbing a class means eating up to the new weight, while dropping one means a harder, riskier cut that leans on the weight-cutting methods common across combat sports.

If you want to see how the fighters who mastered these divisions stack up over full careers, our roundup of undefeated UFC fighters tracks the athletes who never lost inside the cage, and the women’s weight classes piece drills into the four female divisions in more detail.

The short version: the UFC runs eight men’s classes from 125 lb to 265 lb and four women’s classes from 115 lb to 145 lb, each with a hard weigh-in limit, a one-pound non-title allowance, and a capped heavyweight ceiling that boxing does not share.