What Are the IBJJF Nail Rules?
Under International Brazilian Jiu-Jitsu Federation (IBJJF) competition guidelines, athletes must:
-
Keep fingernails and toenails trimmed short
-
Remove sharp edges
-
Ensure nails do not pose a safety risk to opponents
If your nails are too long, jagged, or sharp, officials can require you to trim them before your match.
In some cases, failure to comply can delay or disqualify you.
How Short Do Nails Need to Be for IBJJF?
IBJJF does not specify an exact millimeter length.
However, your nails must:
-
Not extend past the fingertip
-
Be rounded, not square
-
Be smooth when rubbed across skin
If your nail can scratch someone during grip fighting, it’s too long.
What Will Fail IBJJF Nail Check?
Common reasons athletes fail inspection:
-
Long natural nails
-
Sharp square edges
-
Acrylic extensions
-
Lifted gel polish
-
Chipped polish creating rough edges
Even subtle sharp corners can be flagged.
Can You Wear Nail Polish in IBJJF?
Yes — as long as:
-
Nails are short
-
Edges are smooth
-
Polish is not chipped
Chipped polish can create sharp surfaces and may be flagged.
Quick IBJJF Nail Check Checklist
Before stepping on the mat:
✔ Trim nails the night before
✔ File edges round
✔ Check for lifting or cracks
✔ Bring a nail file in your tournament bag
FAQ: IBJJF Nail Rules
Can you compete with acrylic nails in IBJJF?
Only if they are extremely short and smooth. Most long acrylic sets will fail inspection.
Do they check toenails too?
Yes. Both fingernails and toenails are inspected.
What happens if you fail?
You are required to trim them before competing.
Shop Women's IBJJF-Approved NoGi Jiu Jitsu Gear →
Shop Women's IBJJF-Approved BJJ Gis →
More Reading
BJJ Competition Tips: Mindsets, Rulesets, Nutrition, and More
