Encyclopedia of Jiu-Jitsu
🛠️Interactive Tools
Calculators, quizzes and utilities for the practitioner.
Enter your weight and see which official weight category you compete in, with the limits for each division. Useful for planning the weigh-in before competition.
A complete and printable checklist so you don't forget anything at your competition: from registration to your bag, from warm-up to post-fight. Check each item...
Discover what's allowed and what's not at each belt level and in each modality (Gi and No-Gi): choose your belt and see, technique by technique, what's already...
The journey from white belt to black belt in a visual timeline, with the image of each belt and the typical time for each stage — so you can see the entire path...
A complete scorecard for training or refereeing: timer with official time for each belt level, plus points, advantages and penalties for both athletes — everyth...
A quick quiz to test your knowledge of the rules: scoring, tiebreakers, allowed techniques and the most common myths. Each answer cites the current version of t...
Test in practice whether you know how to score Jiu-Jitsu: read the scenario, choose how many points it's worth and see the answer key with the rule explanation....
A visual grid with Jiu-Jitsu's main positions, organized by family — standing, guard, guard pass, control, and submission. Filter by type, search by name, and o...
Understand Jiu-Jitsu's logic as a map: from standing position to submission, see how many points each position is worth and where the game can go from there. To...
Where can and cannot you sew patches on the gi? Touch the zones of the gi — front and back — and see what current rules allow in each area, plus accepted gi col...
