Fertility Calculator - Calculate your fertile days now

The calculator uses your period and cycle length to determine your fertility. The time when the chance of conception is highest. For the calculation, you enter both the first day of your last menstrual period and the length of your cycle in the calendar. This is the number of days between the first day of your last menstrual period and the first day of your next menstrual period. The ovulation calculator not only shows you the day of your ovulation, but also the fertile days around.

The fertility calculator has limited reliability. Rather, these are approximate values. Your age, your diet, your health, how much exercise you do and stress can affect your cycle. An irregular cycle is normal to some extent. Fluctuations between +/- 5 days occur in many women.

Aside from the day you ovulate, there are 4 to 5 other days when you may have a better chance of conceiving. These are not only after, but also before ovulation. If you count from the first day (inclusive) of your menstrual period, the eleventh to fourteenth day after that the desire to become a parent is most likely.

Pregnancy can occur when, after sexual intercourse, a man's sperm meets an egg capable of being fertilized. This is only 12 to 24 hours after ovulation. Sperm cells can survive in the female body for up to 5 days. The hope of having a child is therefore highest two days before to one day after ovulation.