IBJJF age divisions and Masters, explained
IBJJF age divisions don't go by your age on event day — they go by a year-based rule that surprises almost everyone the first time. Here's how it works.
The competition-year rule
Your IBJJF age division is set by the age you reach during the competition year — that's the competition year minus your birth year, not your age on the day you compete. So two people born in the same year are in the same bracket even if one has already had their birthday and the other hasn't.
A practical consequence: a 29-year-old can compete in Masters 1 if they turn 30 at any point in the competition year.
The brackets
Juvenile covers 16–17. Adult is 18–29. Masters then run in five-year bands: Masters 1 (30–35), Masters 2 (36–40), and so on up to Masters 7 (61+). Masters use the same weight classes as adults; the main differences are shorter match times and the age grouping.
Compete down, not up
You may always enter the Adult division regardless of your age — plenty of Masters competitors also do Adult for tougher matches. What you can't do is enter a Masters bracket older than your age allows. The age division lookup places your birth year instantly so you register for the right one.
Confirm before you compete
IBJJF rules and division limits are updated periodically and individual events can have exceptions. Always check the current official rule book at ibjjf.com and your event's published rules.
Frequently asked questions
How do IBJJF age divisions work?
What age is Master 1 in IBJJF?
Can adults compete in Master divisions?
Check your division
Enter your birth year and the age division lookup tells you exactly where you compete.
Open the age division lookup