how old do you have to be to be a cna
Making the world better, one answer at a time. It really depends on the state licensing boards. Like in Florida, the Florida Board of Nursing requires that you be 18 to sit for the CNA exam. I believe all states have this rule, to be sure contact your state licensing board. NOTE: This does not mean you have to be 18 to take the required courses to become a CNA.