The dimensions and shape of the human vagina are of great importance in medicine and Parity is associated with a significant increase in the length of the vaginal fornix. 73 and 74 of that book show that typical vaginal depth in Masters and Johnson's participants ranged from 7–8 cm (– in) in an unstimulated state.
“There is such a wide range of normal, one can be completely assured that in the absence of prolapse, length has no impact on sexual.
On average, the vaginal canal is three to six inches long. If you need a visual aid, that's roughly the length of your hand. But your vaginal.