Puberty: When Does It End for Girls and Boys?

The average age for girls to begin puberty is around 10-11 years old, while for boys it's around 12-13 years old. Puberty typically lasts for about 4 years in girls and 5 years in boys, but this can vary from person to person. For girls, puberty ends with the first period, and for boys, it ends with the first ejaculation.