How long is a normal menstral cycle?

Answer:
For humans, 28 days on average with menstruation ending on day 1 and ovulation occurring on day 14. But, every woman's cycle is different. Talk with your gynecologist for more information.
First answer by Lincolnparadox. Last edit by Lincolnparadox. Contributor trust: 13 [recommend contributor recommended]. Question popularity: 4 [recommend question].