UFC Rules 2026: Rounds, Scoring, Fouls and Weight Classes Explained

This page follows the Unified Rules of MMA published by the Association of Boxing Commissions and Combative Sports, in the file dated August 2026, as of November 2026. That file lists amendments up to August 5, 2026, with a requested implementation date of November 2027, so a few of the newest points may not be in force everywhere yet. It's written for fans who want to follow a fight card without a rule book open, not for referees.

The short version before the first bell

Two fighters, one referee, at least 3 judges and a clock. Each round is scored on its own, and the fight only goes to the judges if nobody finishes it first. Fouls can cost points or the whole fight, and the referee is the only person who can stop the contest.

Round length, bout length and who's in charge

Rule	What the Unified Rules say
Round length	5 minutes
Rest between rounds	1 minute
Rounds in a bout	1, 2, 3, 4 or 5
Longest contest	5 rounds and/or 25 minutes
Most a fighter can compete	5 rounds and/or 25 minutes in a 24 hour period
Judges	A minimum of 3

The referee is the sole arbiter of a bout and the only person authorised to stop a contest. That doesn't mean a result can never be looked at again: if a protest claims a clear rule violation, a video or other review is still possible under the local regulator.

Instant replay may be used to review a fight ending sequence, but only after the fight has been officially stopped, and once it's used the fight can't be resumed.

One more referee power changes how fights look. The referee must stand the fighters up, or break them apart, when neither shows real, significant or sustained effort to advance towards finishing the fight. Simply keeping what looks like a superior position doesn't count as that effort.

What fighters wear, and the mouthpiece rule

The kit list is short and strict. Fighters wear trunks and gloves, male fighters also wear groin protection, and nobody wears shoes in the cage or ring or any jewellery. Male fighters wear nothing on the upper body. Female fighters wear a form-fitting short-sleeved or sleeveless rash guard and/or sports bra.

Hands are wrapped with limited white gauze and white athletic tape, and there's no taping or protective gear on the upper body other than the hands. The only sleeve allowed is a soft neoprene one on the knee and/or ankle.

All fighters must wear a mouthpiece, and a round can't begin without one. If it comes out, the referee calls time and has it replaced at the first opportune moment. A fighter who spits it out on purpose can have points deducted.

Scoring a round on the 10 Point Must System

Every bout is scored by a minimum of 3 judges using the 10 Point Must System. The round winner gets 10 points and the loser gets 9 or fewer, except for a rare even round, which is scored 10-10.

Round score	What it means
10-10	A rare even round
10-9	A close round, won by one fighter
10-8	Won by a large margin through damage, dominance and duration
10-7	One fighter is completely dominated

Judges don't weigh everything equally. They work through three things in order:

1. Effective striking and grappling, which the rules call Plan A.
2. Effective aggressiveness, Plan B.
3. Control of the fighting area, Plan C.

Plans B and C only come into it when Plan A is even.

Here's the rule people miss. Merely holding a dominant position isn't a primary factor in dominance. What the judges assess is what the fighter does with that position, such as submission attempts or strikes. Lying on top of someone isn't the same as winning the round.

The fouls, and what each one costs

The rules list a long set of fouls. These are the ones that come up most:

• Head butts of any kind.
• Eye gouging. Legal strikes that land on the eye socket aren't eye gouging.
• Biting or spitting at an opponent.
• Fish hooking, meaning fingers used to stretch the skin of the mouth, nose or ears.
• Hair pulling.
• Pile-driving, spiking an opponent onto the head or neck.
• Strikes to the spine or the back of the head.
• Throat strikes and grabbing the trachea.
• Groin attacks of any kind.
• Kneeing or kicking the head of a grounded opponent, and stomping a grounded fighter.
• Holding the fence or ropes with fingers or toes.

Grounded has a precise meaning. A fighter is grounded when any part of the body other than the hands or feet is touching the canvas. So one knee down is enough, and a knee or kick to the head at that moment is a foul. Don't assume only a fighter flat on their back counts. Axe kicks aren't stomping, and stomping the feet of a standing fighter isn't a foul.

The back of the head is measured. It starts at the crown, with a 1 inch variance to either side, and runs down to the occipital junction, then down the spine with the same 1 inch variance from its centre line.

Throat strikes are the subtle one. A strike thrown in stand-up action that happens to land on the throat is a clean and legal blow. A directed throat strike, such as pulling the head back to open up the neck, isn't. Like the penalty lists in American football, the detail is in the definitions.

Grabbing the fence or ropes with fingers or toes is a foul. If it had a substantial effect, the referee can take one point, and if the fouling fighter ended up in a better position because of it, the fight restarts standing in a neutral position.

What the referee does after a foul

1. Calls time.
2. Checks the fouled fighter's condition and safety.
3. Decides whether the fighter can continue and how much recovery time is warranted. A fighter hit by a groin foul or an eye poke can have up to 5 minutes to recover if able to continue.
4. If the fight goes on, assesses point deductions and/or time.

If an intentional foul causes an injury and the bout continues, the referee deducts 2 points, and deductions for intentional fouls are mandatory. If the injury from an intentional foul ends the bout at once, the fighter who fouled loses by disqualification.

Accidental fouls depend on the round count. If an accidental foul injury stops the bout before 2 of 3 scheduled rounds, or 3 of 5, are complete, the result is a no contest or disqualification. After that point it's a technical decision to whoever is ahead on the scorecards. A fight ended by unforeseen non-combat reasons follows the same split: it only goes to the cards once 2 rounds of a 3 round bout, or 3 of a 5 round bout, are done.

Every way a bout can finish

Result	How it happens
Submission	A tap out, a verbal tap out, or a technical submission
Knockout	The referee stops it because a fighter can't intelligently defend themselves due to strikes
Technical knockout	A referee stoppage, or a medical stoppage such as a doctor stoppage or a laceration
Disqualification	An intentional foul injury ends the bout, multiple fouls are assessed, or there's flagrant disregard for the rules or the referee
No contest	An accidental injury stops it before enough time has passed for the scorecards
Unanimous decision	All 3 judges score it for the same fighter
Split decision	2 judges score it for one fighter and 1 for the other
Majority decision	2 judges score it for the same fighter and 1 scores a draw
Technical decision	An accidental foul injury stops it late enough, and one fighter leads on the cards
Draw	Unanimous, majority, split or technical, depending on how the cards fall

One plain sentence on the unpleasant rule: if a fighter visibly loses control of bodily function during a round, the referee stops the fight and that fighter loses by technical knockout due to medical stoppage.

Weight classes from atomweight to super heavyweight

Fighters compete within a weight class. Here's the full list from the rules, as of November 2026:

Weight class	Weight
Atomweight	Up to and including 105 lbs.
Strawweight	Over 105 to 115 lbs.
Flyweight	Over 115 to 125 lbs.
Bantamweight	Over 125 to 135 lbs.
Featherweight	Over 135 to 145 lbs.
Lightweight	Over 145 to 155 lbs.
Super lightweight	Over 155 to 165 lbs.
Welterweight	Over 165 to 170 lbs.
Super welterweight	Over 170 to 175 lbs.
Middleweight	Over 175 to 185 lbs.
Super middleweight	Over 185 to 195 lbs.
Light heavyweight	Over 195 to 205 lbs.
Cruiserweight	Over 205 to 225 lbs.
Heavyweight	Over 225 to 265 lbs.
Super heavyweight	Over 265 lbs.

What I'd learn first as a new fan

I'd learn three things before your first card: 5 minute rounds, the 10 Point Must System with its 10-9 and 10-8 rounds, and the grounded rule, because that's where most of the shouting at the screen comes from. Once those click, a point deduction or a stand-up stops looking random.

I'd skip the weight class table and the finer foul procedures until you're following a particular division. If you like knowing exactly why an official stepped in, the same plain-English approach works for rugby union's laws and the rules of ice hockey.

Frequently asked questions

How long is a round in MMA?

A professional round is 5 minutes with a 1 minute rest between rounds. Bouts can be 1 to 5 rounds.

How is an MMA fight scored?

At least 3 judges use the 10 Point Must System: 10 points to the round winner and 9 or less to the loser, with 10-10 for a rare even round.

What counts as a foul in MMA?

Examples in the rules include head butts, eye gouging, biting, hair pulling, groin attacks, strikes to the back of the head or spine, and kneeing or kicking the head of a grounded opponent.

How can a fight end?

By submission, knockout, technical knockout, disqualification, no contest, a decision (unanimous, split, majority or technical) or a draw.

Do fighters have to wear a mouthpiece?

Yes. A round can't begin without one, and the referee can deduct points if a fighter spits it out on purpose.