Earning a black belt in Jiu Jitsu is much more challenging than in other martial arts. People with black belts in BJJ have proved themselves as having mastery with intense training and competition. When you enter the white belt zone, you’d typically take a year to 18 months to get to blue belt. After that, depending on each individual, every belt rise would take about two to five years. That would mean you would need somewhere about eight to 15 years to gain that coveted black belt. But if you are successful in reaching this height, you can be sure that you have definitely earned it and proved yourself as a successful Brazilian Jiu Jitsu fighter.