Ovulation Calculator

Calculating the time when you are ovulating increases the likelihood you will fall pregnant. Women's menstrual cycles range between 20 to 45 days long (the average is 28 days). The ovulation calculator can help you work out when you'll next ovulate. In order to get pregnant you need to get the sperm to meet up with the egg as soon as possible (ideally, within 12–24 hours) after ovulation. And the best way for this to happen is for the sperm to be in the tube already waiting for ovulation. To use our Ovulation Calculator enter the first date of your last period, along with your normal menstrual cycle length in days to estimate your fertile period for conception.


Ovulation Calculator

      Ovulation Calculator

        First day of your last period:

        Average menstrual cycle length:


So when does ovulation happen? It was once thought that ovulation occurred about 14 days before you got your period, which is, if your menstrual cycles are 28 days long, 14 days after the first day of your previous period. However, research indicates that you can ovulate anywhere from day six in your cycle to around day 21. (Each cycle begins on the first day of a period.)
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