Jiu-jitsu vs judo: what the rules reward, and what to ask a club

IJF judo and IBJJF Brazilian jiu-jitsu reward different things, but both include standing and ground work. Their competition rules offer one way to compare them. They do not tell a beginner how a particular coach will spend the class.

The shared root

Kanō Jigorō founded judo in 1882 after studying older jūjutsu traditions. The Kōdōkan's history describes its technical and educational foundations. Kanō and the Kōdōkan explores that history; where jiu-jitsu comes from covers the Brazilian story separately.

What the rules reward

The clearest difference is in each sport's rule book, so this section reads the rule books.

Judo, under IJF competition rules. Ippon can come from a qualifying throw, a twenty-second hold-down or a submission. A throwing ippon requires speed, force, a back landing and control. Holds of ten to nineteen seconds score waza-ari; five to nine seconds score yuko. Two waza-ari make ippon. Ground work can be stopped when it is not progressing. Permitted joint locks target the elbow; leg locks are prohibited. These are competition rules, not a description of every judo class. The IJF's December 2024 announcement for the 2025 rules allowed grips below the belt down to the top of the inner thigh, while retaining shido penalties for grabbing or hooking the legs with the hands or arms. The IJF publishes the current rules and each season's changes on its own site, and national federations vary in the detail.

Brazilian jiu-jitsu, under IBJJF competition rules. A qualifying takedown scores two points rather than ippon. Other scores include two for a sweep or knee-on-belly, three for a guard pass, and four for qualifying mount or back control. Scoring requires the rule book's control criteria. Submission can end the match; other outcomes are also possible. Guard pulling has conditions, and some situations require a standing restart. Submission legality depends on age, belt and gi or no-gi division; check the relevant column of the forbidden-technique chart. The site's belt order post carries the federation's minimum ages and times.

The useful distinction here is what earns a score, not a claim about which art owns standing or ground work.

Question	IJF judo	IBJJF Brazilian jiu-jitsu
Can a throw alone earn the decisive score?	Yes, if it qualifies for ippon	A qualifying takedown earns two points
Can a hold on the ground earn the decisive score?	Yes: twenty seconds is ippon	Positions score points; a submission ends the match
What should a beginner check locally?	The actual beginner programme	The actual beginner programme

What the rules cannot tell you

I am about a month into training and have not been cleared to spar. Before booking either art, I would ask how the coach introduces falling, partner drills and live practice, and which parts a new student may join. The competition rules cannot answer those questions for a particular club. What is Brazilian jiu-jitsu walks through what a jiu-jitsu beginner is told to expect, and why rolls start from the knees explains one convention a first class may meet.

Which to start

Use the rules to identify what interests you, then compare the actual beginner programmes.

If throwing interests you, ask how the club teaches it to newcomers. If ground positions interest you, ask how much time the beginner class gives them. For either sport, ask about supervision, permitted techniques, live-practice eligibility, total fees and the timetable.

For a child, ask which class accepts their age and whether you may observe it. For concerns about impact or self-defence, these sources do not establish which sport is safer or more effective.

Kōdōkan judo's own ground-heavy tradition, the kosen rules described in Kosen judo and the ne-waza that shaped BJJ, is a reminder that the line between the two was drawn by rule books over time, not fixed at the start.

Questions readers ask

Is jiu-jitsu or judo better for self-defence?

The competition rules cited here do not establish a winner for self-defence. Ask what the specific programme teaches and how it practises those skills.

Is judo or jiu-jitsu better for a child?

Compare the actual children's classes: admission age, supervision, activities, fees and whether your child wants to return.

Can a judoka do jiu-jitsu?

Ask the jiu-jitsu coach which class suits your previous training and which rules you need to learn. Prior judo experience does not establish your level relative to everyone in the room.

Are judo and jiu-jitsu the same thing?

No. This comparison concerns two different competition systems, IJF judo and IBJJF Brazilian jiu-jitsu. Both include standing and ground work.

Which is harder to learn?

These sources do not compare learning difficulty or establish how long a beginner needs to become competent.