The Judo practitioner database
Every belt, verified by the people who train with you
Show your rank and promotion history, get it confirmed by your training partners and coaches, and explore the lineage, academies and statistics of Judo worldwide.
- Practitioners
- 395
- Verified profiles
- 106
- Academies
- 102
- Countries
- 29
How it works
- Add your beltsYour current belt, the date of each promotion and who promoted you.
- Get votesTraining partners, coaches and opponents vouch for your rank. Higher belts weigh more.
- Get verifiedA verified profile, your place in the lineage and a certificate if you want one.
Latest verified promotions
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Kyle Baker3rd Dan · 299 days ago
KB -
Sergio Caldieri2nd Dan · 328 days ago
SC -
Jim3rd Dan · 342 days ago
J -
Bradley Harmer2nd Dan · 501 days ago
BH -
Frank Rodriguez1st Kyu · 656 days ago
FR -
Syed Husain Momin Zaidi2nd Dan · 711 days ago
SZ -
Ryan Gabey5th Kyu · 917 days ago
RG -
Mustafa Neama5th Kyu · 1072 days ago
MN
The sport in numbers
From the forum
- How to grow Judo in the USA. 8 replies
- Hello1 reply
- Rank Certificates and IDs2 replies
- Certificates0 replies
- Introduce yourself!31 replies
- Restart Judochecker7 replies
Questions
What is Judochecker?
A free database of Judo practitioners. Members add their belt, their promotion history and their academy, and the community verifies it. 395 members from 29 countries use it to show their rank, find training partners and see where their lineage goes back to.
How does belt verification work?
Members who know you, like training partners, coaches and people you have competed with, vote for your belt. Votes from higher belts and verified members weigh more. When your profile has enough points it is marked as verified.
Is it free?
Yes. Creating a profile, getting verified and using the forum, statistics and training log is free. Certificates and ID cards can be ordered for a small fee.
Can I see who promoted a black belt?
Yes. Every profile shows its promotion history with the promoter of each belt, and the lineage explorer follows it back through the generations.


