Menstrual Cycle Calculator

The menstrual cycle refers to the cyclical development and then shedding of the endometrium, the lining of the uterus. Understanding your menstrual cycle is important if you want to chart your fertility patterns, predict ovulation, and increase your chances of becoming pregnant.

A woman’s fertile period during her menstrual cycle, on average, lasts about seven days: seven days before ovulation (the release of the egg), the day of ovulation, and the day after ovulation. After this, chances of conception decrease quickly, as the egg has a short life-span of about 24 hours.

Most home ovulation tests identify the 2 peak fertility days during your cycle by detecting the surge in Luteinising Hormone (LH) that triggers ovulation. The Clearblue Easy Fertility Monitor is unique as it tracks 2 hormones to typically identify up to 6 fertile days – it not only shows you your 2 peak fertility days, it can also inform most women of an extra 1-5 days of high fertility prior to their peak fertility. Since your partner’s sperm can survive in your body for several days, making love on all of these days can lead to conception.

You can use a free menstrual cycle calculator online, but nothing is more reliable than the Clear Blue Easy Fertility Monitor. It use the most advanced way of tracking your most fertile days – the only non-invasive method that detects both LH and estrogen hormones