UFC Weight Class Calculator
Type any weight in pounds, kilograms or stone and see exactly which UFC division it falls into, how close you are to the limits, and who rules that division right now.
All UFC Weight Classes — lbs, kg & stone
Men's divisions · championship-fight limits
| Women's Division | Limit (lbs) | Limit (kg) | Stone | Range |
|---|
| Strawweight | 115 | 52.2 | 8 st 3 | up to 115 |
| Flyweight | 125 | 56.7 | 8 st 13 | 116–125 |
| Bantamweight | 135 | 61.2 | 9 st 9 | 126–135 |
| Featherweight | 145 | 65.8 | 10 st 5 | 136–145 |
Women's divisions · non-title fights allow a 1-lb allowance in every division
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Every UFC Division, In Detail
Flyweight
125 lbs · 56.7 kg · 8 st 13
Range: 116–125 lbs · championship limit 125 lbs
The fastest division in the sport: five-round pace that other weight classes physically cannot copy. Demetrious Johnson ruled it for a decade and made geniuses look ordinary.
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Bantamweight
135 lbs · 61.2 kg · 9 st 9
Range: 126–135 lbs · championship limit 135 lbs
Pound for pound the deepest men's division of the modern era. Cardio machines, elite wrestling and almost no easy nights from champion to #15.
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Featherweight
145 lbs · 65.8 kg · 10 st 5
Range: 136–145 lbs · championship limit 145 lbs
Speed with real finishing power. The Volkanovski era set the standard for what a complete featherweight looks like.
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Lightweight
155 lbs · 70.3 kg · 11 st 1
Range: 146–155 lbs · championship limit 155 lbs
The shark tank. Historically the most stacked division in MMA: every contender is a former champion somewhere, and title shots take years to earn.
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Welterweight
170 lbs · 77.1 kg · 12 st 2
Range: 156–170 lbs · championship limit 170 lbs
The classic glamour division of GSP and Usman: big enough to hurt you, light enough to go five hard rounds.
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Middleweight
185 lbs · 83.9 kg · 13 st 3
Range: 171–185 lbs · championship limit 185 lbs
Where knockout power becomes standard equipment. The Silva and Adesanya reigns made it the striker's showcase.
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Light Heavyweight
205 lbs · 93.0 kg · 14 st 9
Range: 186–205 lbs · championship limit 205 lbs
One-punch territory. Nearly every fighter here can end a night instantly, which is why favorites fall more often than anywhere except heavyweight.
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Heavyweight
265 lbs · 120.2 kg · 18 st 13
Range: 206–265 lbs · championship limit 265 lbs
The 265-lb ceiling. Everyone hits hard enough to finish, cardio is the hidden stat, and no lead is ever safe.
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Women's Strawweight
115 lbs · 52.2 kg · 8 st 3
Range: up to 115 lbs · championship limit 115 lbs
The lightest division in the UFC and one of its most technical: high-volume striking and scrambles that rarely stop for a breath.
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Women's Flyweight
125 lbs · 56.7 kg · 8 st 13
Range: 116–125 lbs · championship limit 125 lbs
The division Valentina Shevchenko turned into a masterclass, blending speed with genuine stopping power.
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Women's Bantamweight
135 lbs · 61.2 kg · 9 st 9
Range: 126–135 lbs · championship limit 135 lbs
The division that built women's MMA: Rousey, Nunes, and now a new generation of finishers.
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Women's Featherweight
145 lbs · 65.8 kg · 10 st 5
Range: 136–145 lbs · championship limit 145 lbs
The rarest division in the UFC: thin on roster, heavy on power, historically ruled by crossover athletes.
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UFC vs Boxing Weight Classes
Boxing slices the same human range into 17 divisions; the UFC uses 8. That's why "moving up a weight class" is a much bigger jump in MMA — often 15 lbs instead of boxing's 3 to 8.
| Boxing Division | Limit (lbs) | Nearest UFC Class |
|---|
| Minimumweight | 105 | — (below UFC range) |
| Light Flyweight | 108 | — (below UFC range) |
| Flyweight | 112 | Women's Strawweight (115) |
| Super Flyweight | 115 | Women's Strawweight (115) |
| Bantamweight | 118 | Flyweight (125) |
| Super Bantamweight | 122 | Flyweight (125) |
| Featherweight | 126 | Bantamweight (135) |
| Super Featherweight | 130 | Bantamweight (135) |
| Lightweight | 135 | Bantamweight (135) |
| Super Lightweight | 140 | Featherweight (145) |
| Welterweight | 147 | Featherweight (145) |
| Super Welterweight | 154 | Lightweight (155) |
| Middleweight | 160 | Lightweight (155) |
| Super Middleweight | 168 | Welterweight (170) |
| Light Heavyweight | 175 | Welterweight (170) |
| Cruiserweight | 200 | Light Heavyweight (205) |
| Heavyweight | 200+ | Heavyweight (265 cap) |
A boxing "lightweight" (135) is a UFC bantamweight — the names don't line up, only the numbers do.
What weight class am I? How to read the result
UFC divisions are named by their upper limit: Lightweight means "no heavier than 155 lbs on the scale", not "around 155". So a fighter who walks around at 165 lbs has two real options: cut roughly ten pounds of water to make Lightweight, or fight bigger men at Welterweight (170). Nearly every professional cuts down, which is why the weights you see announced at weigh-ins are 10 to 20 lbs lighter than what fighters actually weigh on fight night.
What is a catchweight?
A catchweight is any agreed limit that isn't an official division line, like 180 lbs between Welterweight and Middleweight. Promotions book catchweights when a fight is worth making but one side can't (or won't) make the standard limit, or as a penalty when someone misses weight. No belts are ever on the line at a catchweight.
UFC vs boxing weight classes
Boxing splits the same human range into 17 divisions, some just 3 or 4 lbs apart. The UFC uses 8 men's classes with much wider gaps, which is why a single UFC division can contain a 15-lb spread and why moving up "one class" in MMA is a far bigger jump than in boxing.
What does pound-for-pound mean?
The pound-for-pound (P4P) ranking imagines every fighter were the same size and asks who'd be best on pure skill. It's how a 145-lb champion can be ranked above a heavyweight: the list ignores weight entirely and rewards dominance, competition quality and title defenses.
Want the full story on cuts, misses and why divisions exist?
Read: UFC Weight Classes Explained →