Judo vs Jiu Jitsu (BJJ), Would You Rather Be Thrown or Choked?

Judo vs jiu jitsu is a family argument. Both arts come from the same Japanese jujutsu schools, and both were shaped by one man, Jigoro Kano, who founded judo in Tokyo in 1882. Then the rulebooks pulled them apart. Judo rewards the clean throw that ends a fight on its feet. Brazilian jiu-jitsu rewards what happens after you land.

My own art sits on the same family tree. Aikido grew from Daito-ryu aikijujutsu, and I spent decades on its mats, throwing and being thrown. My daughters trained Brazilian jiu-jitsu for a year, and I have taken jiu-jitsu seminars along the way. I have never competed under either rulebook, so this guide leans on what those rulebooks actually say, along with the injury research and the fighters who have done both.

The Main Difference Between Judo and Jiu Jitsu

Choose judo if you want to throw people, compete in an Olympic sport, and learn to fall without getting hurt. Choose Brazilian jiu-jitsu if you want to control and submit someone on the ground, train in a sport with no Olympic path but a huge amateur scene, or prepare for MMA from the bottom up.

In the BJJ vs judo debate, choose both if you can. The judoka who learned jiu-jitsu, and the jiu-jitsu players who learned to throw, are some of the most complete grapplers alive. You will meet a few of them below.

Two Rulebooks, One Glance

What each sport rewards, from the IJF 2025 rules and the IBJJF rulebook.

Judo, Jujutsu, and Jiu-Jitsu Are Three Different Things

Most of the confusion about the difference between judo and jiu jitsu comes from three words that sound alike.

Jujutsu is the old close-combat system of the samurai, taught in many separate schools. The Takenouchi-ryu, founded in 1532, is usually cited as the oldest. Judo is Jigoro Kano’s reform of those schools into a safer sport that could be practiced at full speed. Brazilian jiu-jitsu, or BJJ, is what judo became in Brazil, where the ground game grew into the whole art.

The spelling “jiu-jitsu” is simply an older way of writing jujutsu in English. When Brazilians kept that name, they were calling their art by what judo was still called when it arrived in Brazil. In this guide, “jiu jitsu” means Brazilian jiu-jitsu unless I say otherwise. For the older Japanese art and the rest of the family, see our guide to the types of martial arts.

How Judo Became Brazilian Jiu-Jitsu

Kano opened the Kodokan in 1882 in a small room at a Buddhist temple in Tokyo, according to the International Judo Federation. One of his early students, Mitsuyo Maeda, toured the world fighting challengers and reached Brazil in 1914, where he settled in the northern city of Belém.

The Gracie family story says Carlos Gracie learned from Maeda there. Helio Gracie, Carlos’s younger brother, told a Japanese interviewer in 1994 that he “vaguely” remembered Carlos learning from Maeda, and added: “I heard that Konde Koma called it jiu-jitsu.” Konde Koma was Maeda’s ring name. The full interview is worth reading. The historian Robert Drysdale has argued that the documents point to a different teacher, Maeda’s student Jacyntho Ferro, and that no record shows Maeda teaching Carlos directly. The Gracie family disputes that, and the question remains open.

What nobody disputes is what happened next. Helio, small and light, reworked the techniques around leverage, asking what “a small and weak man like me should do to win.” In 1951, at the Maracanã stadium in Rio, the Japanese judo champion Masahiko Kimura beat Helio with a reverse arm lock, and Helio’s corner threw in the towel. Today that lock is called the kimura in every jiu-jitsu gym in the world. Forty-two years later, Helio’s son Royce won UFC 1 in Denver against bigger men, and Brazilian jiu-jitsu went global.

How a Judo Match Is Won

Judo is built around the throw. A clean throw that lands the opponent largely on the back, with force and control, scores ippon and ends the match at once. Under the International Judo Federation rules for 2025 to 2028, a lesser throw scores waza-ari, and two waza-ari make ippon. The 2025 rules also brought back a third, smaller score, the yuko, for throws that land on the side.

Judo has groundwork too, but it is short. You win on the ground by pinning the opponent for 20 seconds, or by a choke or an armlock at the elbow. Leg locks and wrist locks are not allowed. When the action on the ground stalls, the referee calls “matte” and the fighters stand up again. Senior matches last four minutes, with golden score if they are tied.

The rule that shaped modern judo most is the ban on grabbing the legs. Since 2013, judo has penalized attacking the legs with the hands, at first with instant disqualification and later with a shido followed by disqualification. The 2025 rules made it a single shido, a minor penalty, and allow grips down to the top of the inner thigh. Below that, leg grabs are still banned. Some websites claim leg grabs are back in judo. They are not.

How a Brazilian Jiu-Jitsu Match Is Won

Brazilian jiu-jitsu scores positions, not throws. Under the IBJJF rulebook, a takedown is worth 2 points, the same as a sweep from the bottom or a knee on the belly. Passing the guard scores 3, and taking the mount or the back scores 4. Each position must be held for three seconds.

Notice what is missing. A perfect throw earns the same 2 points as a scrappy takedown, and nothing ends the match except a submission. You can even sit straight to your back to start the fight from guard, which judo would penalize. If the points are tied at the end, the match goes to advantages, then penalties, then the referee’s decision. There is no overtime.

Brazilian jiu-jitsu also allows far more submissions than judo: chokes, armlocks, shoulder locks, and, as you climb the belts, foot locks, knee bars, and wrist locks. Heel hooks are legal only for adult brown and black belts competing without the gi. Matches run five minutes at white belt and ten minutes at black belt.

Is Judo or BJJ More Dangerous? What the Data Shows

Both arts are safer than their reputations, and they hurt people in different places.

In judo, the throw is the danger. A review of Olympic judo found that about 11 to 12 percent of athletes were injured at each Games, most often in the knee, shoulder, and fingers, and that being thrown was the most common cause. At the Olympics from 2008 to 2016, judo had the highest injury rate of the combat sports studied, 9.6 injuries per 1,000 minutes of fighting, against 4.8 for wrestling.

In Brazilian jiu-jitsu, submissions and knees do the damage. A study of eight tournaments in Hawaii found 9.2 injuries per 1,000 matches, with the elbow the most injured joint and the armbar the most common cause. A 2021 survey of 1,140 athletes found the knee was the most common injury site, and a 2026 study of brown and black belts found that athletes exposed to heel hooks had twelve times the rate of knee injuries.

Be careful with headlines that say one art is “twice as dangerous.” The studies count injuries in different ways, and no single study has measured both arts the same way. Two findings hold across them. Most injuries in both arts happen in training, not competition, and a good coach who controls the intensity of sparring matters more than the art you choose.

Does Judo or BJJ Burn More Calories?

The Compendium of Physical Activities, the standard reference researchers use, rates judo at 11.3 METs and general martial arts, including jiu-jitsu, at 10.3. For an 80-kilogram person, that works out to roughly 900 and 820 calories an hour of continuous effort. A real class, with drilling, rest, and instruction, burns far less. Both arts will get you fit, and judo’s explosive standing exchanges are slightly harder on the lungs.

Judoka Who Conquered Jiu-Jitsu and MMA

The best argument for cross-training is the athletes who have done it.

Ronda Rousey won an Olympic bronze medal in judo at Beijing 2008, then became the UFC’s first women’s champion, winning fight after fight with an armbar. She became the first woman in the UFC Hall of Fame. Kayla Harrison, a two-time Olympic judo champion, won the UFC bantamweight title in 2025 with a kimura, the lock named for the judoka who beat Helio Gracie.

Olympic judoka have earned jiu-jitsu black belts too. Travis Stevens won Olympic judo silver at Rio 2016 after earning his Brazilian jiu-jitsu black belt under John Danaher. Brazil’s Flávio Canto took judo bronze at Athens 2004 and also holds a jiu-jitsu black belt. We could not find a jiu-jitsu-first athlete who reached the Olympic level in judo, which says something about how hard the standing game is to learn late.

Is Judo or BJJ Better for Self-Defense and MMA?

For self-defense, judo gives you something no other art does as well: the ability to stay on your feet, and to fall on concrete without hitting your head. Its throws also work against an attacker wearing a jacket. Brazilian jiu-jitsu gives you the skill to escape when you end up underneath someone bigger, which is where many fights go wrong. For a full comparison of options, see our guide to the best martial arts for self-defense.

For MMA, you need both. By our count of everyone who has held an undisputed UFC title, about half hold a Brazilian jiu-jitsu black belt, while only two, Ronda Rousey and Kayla Harrison, were Olympic judoka. An analysis of UFC fights found that winners outscored losers in submissions and in improving their position round after round. Judo’s grip fighting and throws decide where a fight goes; jiu-jitsu decides what happens once it gets there. Our guide to what Brazilian jiu-jitsu is explains how a beginner’s training works, and how to learn MMA shows how the pieces fit together.

How Long Does It Take to Get a Black Belt in Judo or Jiu Jitsu?

Brazilian jiu-jitsu is famously slow. The IBJJF graduation rules require at least two years at blue belt, a year and a half at purple, and a year at brown, so four and a half years is the legal minimum from blue to black. Most people take many years longer.

Judo can move faster, especially for competitors. Under USA Judo’s promotion guidelines, a first-degree black belt requires a minimum age of 15 and three years in grade, and contest wins can shorten the wait. Judo also asks you to demonstrate a formal kata. Brazilian jiu-jitsu has no kata at all.

Decisions, Decisions Judo or Jiu Jitsu - How to Choose

The coach matters more than either list. Watch a class before you sign up, and ask how they keep sparring safe.

My Thoughts on Throw Them or Choke Them

Judo and Brazilian jiu-jitsu are the same family with different priorities. Judo asks you to end the fight on your feet. Jiu-jitsu asks you to win it after you land. If I were starting today, I would learn to throw first and then learn what to do on the ground, because the best grapplers I have watched never had to choose.

Did you start on the judo mat or the jiu-jitsu mat, and what did the other art teach you? Trade notes with judoka and jiu-jitsu players at the open mat, and pick up the throw or sweep your game has been missing →