Quick answer: the grey belt is the first coloured belt in BJJ’s separate youth belt system for children. Under the IBJJF graduation system the “grey group” actually has three steps — grey-and-white, solid grey, and grey-and-black — and is officially open to athletes aged 4 to 15, which in practice makes it the entry colour for younger kids. Grey is an early beginner rank in the kids’ system, not a senior or adult rank, and IBJJF sets no minimum time a child must stay at any kids’ belt: the professor decides. Below, we cover the age bands, what kids learn, stripes and degrees, and how youth promotion works.
Last updated: November 10, 2026 (Pacific). Sources checked November 11, 2026 UTC.
Belt rules vary by organisation and academy. This guide reflects the IBJJF graduation system as of June 2026; your child’s school may use a similar or different structure. Ask the head coach how their kids’ program runs belts before assuming national or IBJJF rules apply.
Grey belt at a glance
| Detail | What to know |
|---|---|
| Which system | The separate youth/kids belt system for athletes aged 4 to 15, not the adult white-to-black order |
| Grey group steps | Three belts: grey-and-white, solid grey, grey-and-black |
| Official age band | Ages 4 to 15 (IBJJF “grey group”); yellow group opens at age 7, orange at 10, green at 13 |
| Meaning at this stage | An early beginner grade focused on fundamentals, movement and basic safety |
| Minimum time in belt | None for ages 4 to 15; promotion is the professor’s discretion |
| Stripes / degrees | Set by the academy’s chosen system (monthly, triannual or quarterly); not an adult 4-stripe rule |
| When it ends | A grey belt who turns 16 moves to blue belt in the adult system |
What is the grey belt?
The grey belt is the lowest coloured belt in Brazilian jiu-jitsu’s youth rankings. It exists because young children need a different ladder than adults: waiting years between promotions does not make sense for a six-year-old. The IBJJF youth system for ages 4 to 15 lists 13 belts — white, then three grey, three yellow, three orange and three green belts — and each colour group has a white version, a solid version and a black version.
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So a “grey belt” is not one exact thing. When someone says a child “got their grey belt,” they usually mean one step inside the three-belt grey group. The meaning is the same every time: the child is an early beginner in the youth system, after white and before the yellow group.
Grey is not an adult or senior rank. A green belt in the kids’ system is not the same as an adult rank, and none of the youth belts carry the weight of the adult white-to-black ladder. If you are mapping out the full order, our BJJ belt order guide covers both progressions side by side.
The grey belt group and its age bands
The IBJJF graduation document gives each youth colour group a minimum starting age and a wider upper bound:
| Youth colour group | Official age range (IBJJF) | Typical place in a kids’ program |
|---|---|---|
| Grey (grey/white, grey, grey/black) | Ages 4 to 15 | Entry coloured belt for the youngest children |
| Yellow (yellow/white, yellow, yellow/black) | Ages 7 to 15 | Early childhood group, roughly after grey |
| Orange (orange/white, orange, orange/black) | Ages 10 to 15 | Older pre-teen group |
| Green (green/white, green, green/black) | Ages 13 to 15 | Teen group before the adult ladder |
Officially the grey group runs from age 4 up to the child’s sixteenth birthday, but in most academies grey is where the youngest beginners land, and children often move into the yellow group near age 7. Schools space those moves differently. For a parent the takeaway is simple: grey means “starting out in kids’ BJJ.”
The youth belts are also sized for kids: IBJJF says belts for ages 4 to 15 run about 2.5 to 3.5 cm wide (adults are 3.5 to 4.5 cm), with a black bar around 10 cm long at one end. That is a sizing detail, not a rank rule, but it is why a child’s gi belt looks thinner than the adults’. Belt-and-uniform rules matter most at competition; our IBJJF gi rules guide covers the uniform side.
Where the grey belt sits in the kids’ order
Here is the full IBJJF youth belt order (ages 4 to 15), with the grey group highlighted:
| Position | Belt | Colour group |
|---|---|---|
| 1 | White | White |
| 2 | Grey-and-white | Grey group |
| 3 | Solid grey | |
| 4 | Grey-and-black | |
| 5 | Yellow-and-white | Yellow group (7+) |
| 6 | Solid yellow | |
| 7 | Yellow-and-black | |
| 8 | Orange-and-white | Orange group (10+) |
| 9 | Solid orange | |
| 10 | Orange-and-black | |
| 11 | Green-and-white | Green group (13+) |
| 12 | Solid green | |
| 13 | Green-and-black |
Think of the grey group as the “first colour” of kids’ BJJ; most young grapplers spend their early months or years inside it.
What kids actually learn at the grey belt
There is no single IBJJF-mandated grey-belt curriculum, so it varies by academy, but youth programs follow a deliberately basic arc for young beginners.
A common description from kids’ classes is that the youngest group learns survival and movement before technique: breaking a grip when someone grabs them, simple escapes and passes from the ground, safe falling, and entry-level self-defence — wrapped in games and drills. Older kids move on to fundamentals and controlled submission work. That matches the parent-focused advice in a popular BJJ Fanatics article on when kids should start training, which describes young beginners mainly working grips, simple passes and escapes.
Belt colour rarely tells you a child’s “skill level” the way a black belt does for an adult. At grey, the honest reading is that the child is early in the journey and the program is building comfort on the mat. Before signing up, ask the head coach what the kids’ curriculum covers at the grey stage, how promotion is decided, and what safety rules the class enforces. If they cannot explain it, treat that as a sign. Our guide to the BJJ open mat walks through the informal training and rolling format you’ll see at many schools.
Stripes and degrees on a kids’ grey belt
This is the part that confuses parents most. Adult white-to-brown belts use four stripes, or “degrees,” before the next belt; kids’ belts follow no such fixed rule.
IBJJF suggests that academies divide each youth belt (including the grey group) into degrees, and it offers three accepted ways to do it, at the professor’s discretion:
| System | Cadence | How many marks before the next colour |
|---|---|---|
| Monthly | One mark per month | 11 degrees; the 12th graduates the child |
| Triannual | Every four months | 2 degrees; the 3rd graduates the child |
| Quarterly | Every three months | 3 degrees; the 4th graduates the child |
The stripes a kid earns are internal progress markers inside a colour group, not a promise of promotion on a set date. Under the monthly system a child can collect many marks before moving colour; under the quarterly system the cadence is tighter. Either way the child gets small, frequent signs of progress — the whole point of the youth system.
For a parent, the practical advice is not to read too much into a stripe: two kids at the same belt can have very different counts just because their clubs use different systems. Watch for consistency and enjoyment, not the number of tape marks.
How promotion works in youth programs
Under the IBJJF system, athletes aged 4 to 15 have no required minimum time in any youth belt. The professor decides when a child is ready, and that is the single most important fact for parents: there is no IBJJF-mandated clock for a kids’ grey belt.
Three things govern how it is recognised:
- The professor’s call. IBJJF leaves how long a practitioner stays in each belt to the head coach, and the same leeway applies to the youth belts.
- An affiliated black-belt professor signs off. A child’s graduation (white through brown) must be approved by an IBJJF-affiliated black-belt professor to be registered with the federation, so do not assume a rank from a non-IBJJF club is recognised at IBJJF events.
- Movement through the group. A child typically rises grey-and-white → solid grey → grey-and-black before the yellow group, but nothing forces a strict schedule. Ask the professor where your child sits.
What happens when a grey belt turns 16
At 16 a youth athlete leaves the kids’ system for the adult ladder. The IBJJF rule is:
- Grey, yellow or orange belt → turns blue in the adult system.
- Green belt → blue or purple, at the professor’s decision.
- White belt → may stay white.
So for a grey belt the path is straightforward: the period ends and the child becomes an adult blue belt at 16 — a clean hand-off, and the reason not to compare a youth grey belt to any adult rank.
Grey belt FAQs
Is the grey belt the same as a white belt?
No. White belt is the starting belt for everyone (adults and kids). The grey belt is the first coloured belt in the youth system, and it comes in three sub-steps: grey-and-white, solid grey, and grey-and-black.
How long does a kid stay at the grey belt?
There is no required minimum time for ages 4 to 15. How long a child stays grey depends on the professor and the academy’s promotion style; some kids move through it in under a year, others longer.
Is a grey belt an adult or senior rank?
No. Grey is a youth-system rank for children. Adult and senior rankings (blue through red, and the senior ladder) are completely separate.
Do grey belts compete?
Yes, but always check the specific event. Youth divisions use belt (or sometimes colour group) alongside age and weight, and can vary between organisations. Look at the event page you registered for, not a general rule.
Why does my kid’s grey belt count more stripes than an adult belt?
Kids’ belts can carry many marks because IBJJF lets academies choose a monthly, triannual or quarterly degree system, while adults use a fixed four-stripe system through brown. The counts are not directly comparable.
Bottom line
The grey belt is the first coloured belt in BJJ’s youth system — a three-step group (grey-and-white, grey, grey-and-black) for children aged 4 to 15 and, in practice, the youngest beginners. There is no minimum time in the belt; promotion is the professor’s decision, and stripes reflect the academy’s chosen system. For a parent, the useful measures are that a child is learning fundamentals safely and enjoying the mat — not how fast the belt turns.
Sources
- IBJJF Graduation System — official page linking the June 2026 graduation document; primary source for age bands, belt order, minimum periods and the suggested youth degree systems. The PDF pages carry “VERSION 3.1 2025©” while the final page prints “VERSION 3.3”; document date June 2026. Inspected November 11, 2026.
- When Should Children Start BJJ? (BJJ Fanatics) — parent-facing coaching article used for general advice on what young beginners learn; posted October 2018 under the platform’s “Fanatics Authors” byline. Used only for general advice, not for belt-age facts.
- BJJ Belts System – Jiu-Jitsu Belts Ranking Guide (BJJ World) — secondary corroboration for the youth belt order, the three grey variants, the age 4–15 band, and the “no minimum time for kids” point; updated August 2025. Checked November 11, 2026.
