Kickboxing, Muay Thai or full contact: the differences, and how to choose

In a gym, the sign reading "kickboxing" can cover four different sports. All are fought standing, with gloves, in a ring or on a mat, and in France they all come under the same federation, the FFKMDA (kickboxing, muaythai and associated disciplines). But the techniques allowed, the kit and the spirit change from one rulebook to the next. Here is how to tell them apart before you walk into a class.

What is allowed, rulebook by rulebook

Full contact is the oldest kickboxing ruleset, born from American karate in the early 1970s. Punches and kicks are thrown at full power, but only above the belt. No low kicks, no knees, no elbows, no holding. Only a foot sweep is tolerated. The rules applied in France require a minimum number of kicks per round, which forces you to work your legs as much as your hands.

Low kick adds one target: the thigh. The roundhouse kick to the leg becomes a central weapon and the fighting distance gets shorter. Knees and elbows remain banned, and the referee breaks up any clinch.

K1 also allows knee strikes. The name comes from a Japanese tournament circuit created in 1993, whose rules became a discipline in their own right at WAKO, the international kickboxing federation. The knee is thrown without holding the opponent: since WAKO's 2026 rules, any grab is banned and a clinch used to stall the exchange is penalised. Elbows are still out.

Muay Thai, or Thai boxing, is the most complete of the four. It is called the art of eight limbs: fists, feet, knees and elbows. The clinch, gripping the neck or body, is at the heart of the game: it lets you land knees, off-balance the opponent and throw them down. Elbows, which cut the brow easily, are reserved for experienced amateurs and usually banned for juniors.

Kit, protection and surfaces

The outfit gives the ruleset away. In full contact, fighters wear long trousers and foam foot pads, a legacy of karate. In low kick and K1 it is shorts, with shin guards covering the instep in amateur competition. In Muay Thai the shorts are wide and slit, the boxer fights barefoot and enters the ring wearing the mongkon, the ritual headband, to perform the wai khru, the dance of respect to the teacher.

Competition gloves weigh 10 oz in most amateur rulesets, headgear is compulsory for amateurs and juniors, a gumshield and a groin guard everywhere. Amateur Muay Thai adds elbow pads.

Kickboxing also has a family of mat disciplines with controlled contact: light contact, kick light and point fighting, where the referee stops the exchange at each touch. These are what most members practise, including children and adults who do not want to fight full contact.

Bout length and age groups

In amateur kickboxing, a ring bout is three 2-minute rounds with a 1-minute break. Professionals fight 3-minute rounds, up to five or more for a title. In Muay Thai, the international federation IFMA sets three 3-minute rounds for amateur seniors and 2-minute rounds for under-18s; in Thailand, professionals fight five 3-minute rounds with 2-minute breaks.

On the mat, WAKO admits cadets from age 10. In the ring, where strikes land at full power, competition starts at junior level, at 15. In Muay Thai, juniors fight under adapted rules: no elbows, extra padding, a chest guard. In France, the FFKMDA groups senior fighters into classes, from D for debutants to A for the elite, and requires a grade before a first competition.

Which one to choose for your goal

For fitness and recreation, all four are equal: in every club, most members train on pads and bags and do light sparring without ever competing. Pick the nearest gym and the class whose atmosphere suits you.

If you come from boxing or karate, full contact is the gentlest transition: same punches, high kicks, no legs to protect. If you enjoy close exchanges and pressure fighting, low kick or K1 will suit you better. If you want the widest range, with clinch, knees and elbows, it is Muay Thai, which also takes the longest before you can fight.

For a child of 6 to 12, clubs almost always offer an educational light-contact version, whatever the class is called. For an adult over 40, the mat formats (light contact, kick light) let you progress and compete without the risks of full contact.

Prices

In a French club, expect 150 to 350 euros a year including the licence; private gyms charge more, often 40 to 80 euros a month. Starter kit costs 100 to 150 euros: 12 to 16 oz gloves, wraps, a gumshield and shin guards. Many clubs offer one or two trial classes.

Same federation, same grades?

No. The French federation separates grades by discipline: a kickboxing grade does not open Muay Thai competitions and vice versa. Grades take the form of coloured gloves, with a technical syllabus specific to each discipline, and you prepare a grading in the one you practise.