A judo kata is a prearranged form: a fixed sequence of techniques performed by tori and uke in a set order with set movements. The Kodokan recognizes seven main kata, from nage no kata for throws to koshiki no kata, inherited from jujutsu. They preserve principles and dangerous techniques, and they are used to assess judoka at dan gradings.
Why judo needs kata
Judo is mostly learned through randori, or free practice. Randori has two blind spots. It only shows the techniques the rules allow, and it shows them distorted by fatigue, resistance and the fear of being thrown. Kata covers both gaps.
First, kata preserves. When Jigoro Kano took strikes, leg locks and defences against weapons out of randori, he did not throw them away. He put them into kata. That is why you find atemi (strikes) in kime no kata and an ashi-garami in katame no kata.
Second, kata shows the principle in isolation. An uki-otoshi (floating drop) rarely works as written in randori. In kata, it shows perfectly how to throw by balance-breaking alone. Think of kata as a lab where you isolate the one variable that matters. Our article on the history of judo explains how this split between randori and kata took shape in the early days of the Kodokan.
The two randori kata
Kano grouped two kata under the name randori no kata, because together they explain free practice.
Nage no kata, the forms of throwing
Fifteen throws in five sets of three. The sets move from hand techniques to hip and foot techniques, then two sets of sacrifice throws, backward and sideways. It is the most widely practiced kata in the world and the first one most judoka learn. Many federations require it for first dan. Every set is covered in our nage no kata guide.
Katame no kata, the forms of control
Fifteen groundwork techniques in three sets of five: pins, strangles and joint locks. Most of it is done on the knees, and it demands a precision of movement that ground randori never teaches. The sets and the usual grading mistakes are in our article on katame no kata.
The self-defense kata
Kime no kata, the forms of decision
Twenty defences: eight kneeling (idori) and twelve standing (tachiai). Uke attacks empty-handed, with a dagger or with a sword. Tori answers with strikes, locks and throws. It is an old kata, fast and committed, and it needs a confident uke.
Kodokan goshin jutsu, modern self-defense
Created in 1956, it adapts self-defense to the modern era. It has twenty-one techniques: twelve against unarmed attacks and nine against weapons (knife, stick, pistol). The grabs and attacks are the kind you could meet in the street.
If this side of judo interests you, read our piece on judo for self-defense.
The kata of principle and expression
Ju no kata, the forms of gentleness
Fifteen movements in three sets of five, performed slowly and without falls. Ju no kata shows the principle of flexibility: give way to force, then turn it around. It can be done in a judogi or in everyday clothes, which makes it suitable for older or injured judoka. It is also the clearest way to show an adult beginner what the word judo actually means.
Itsutsu no kata, the forms of five
Five movements that express forces of nature: a push, a whirlpool, a wave. It is the most abstract kata in judo. Few people learn it, and it is mostly studied by senior grades.
Koshiki no kata, the antique forms
Twenty-one techniques from Kito-ryu, one of the two jujutsu schools Kano studied: fourteen in the omote part and seven in the ura part. They assume fighters wearing armour, which explains the heavy movement and unusual falls. Kano kept this kata out of respect for his teacher and to preserve the roots of judo.
Judo kata at a glance
| Kata | Content | Usually studied by |
|---|---|---|
| Nage no kata | 15 throws, 5 sets | Brown belts and up |
| Katame no kata | 15 ground techniques, 3 sets | Higher dan grades |
| Kime no kata | 20 defences (8 kneeling, 12 standing) | Higher dan grades |
| Ju no kata | 15 slow movements, 3 sets | All ages, senior grades |
| Kodokan goshin jutsu | 21 defences (12 unarmed, 9 vs weapons) | Higher dan grades |
| Itsutsu no kata | 5 movements | Senior grades |
| Koshiki no kata | 21 techniques (14 omote, 7 ura) | Senior grades |
The last column shows a common learning order, not a rule. Each federation sets which kata is required for each dan grade, and these syllabuses change. Check the current version with your federation before preparing a grading.
Kata and the competitor
Many competitors see kata as a chore to get through for the black belt. That is understandable, and it misses the point. Nage no kata fixes faults that randori tends to lock in: a weak hikite (pulling hand), sloppy foot placement, a bent-over posture. Katame no kata teaches weight distribution on the ground better than twenty rounds of ne-waza randori.
There are also kata championships, both national and international. Pairs compete on the quality of their demonstration, scored by a panel. It is a different way to live judo, and many former competitors take it up.
Which kata to start with
If you are a brown belt, start with nage no kata, first three sets, with a regular partner. Work one set a month at the end of class. Ten minutes is enough. If you already hold a black belt and want a new challenge, try ju no kata. It is easy on the knees, it involves no falls and it changes how you read your partner's force in randori. It also suits judoka coming back from injury, once a doctor has cleared them to train.