Menstrual Cycle Calculator

The menstrual cycle is the monthly series of changes a woman's body goes through in preparation for the possibility of pregnancy.

It is regulated by various hormones like Estrogen and Progesterone, which help build the uterus lining and eventually shed it, if pregnancy does not occur.

The average menstrual cycle is of 28 days, considering the 1st days of 2 consecutive cycles. But, this might vary from woman to woman.

Any cycle of lengths 21 days to 35 days are considered normal.