Common Sense Media is a place I always go to to find out how appropriate a show or movie is for my children. You'll find a mixture of opinions from parents, kids, and experts. According to the site's experts, Naruto is suitable for kids over 11, parents put the age at 8 years, and the kids' rating is 10 years. I have found that there isn't anything sexual and no explicit language, but there is frequent, strong animated violence that often includes using weapons.