how deep is cervix

The cervix itself is approximately 2 to 4 centimeters (about 0.8 to 1.6 inches) long. It is the narrow passage that connects the uterus with the vagina. The depth or position of the cervix inside the vaginal canal varies among individuals, with the cervix being located about 3 to 4 inches deep inside the vaginal canal in an average unaroused woman. A "high cervix" can be about 4 to 5 inches deep, and a "low cervix" is less than 3 inches deep from the vaginal opening. The vagina lengthens when aroused, which affects how deep the cervix is felt. The cervix's function includes allowing menstrual flow out and sperm passage in during conception.