Ovulation calculator

If you’re trying to fall pregnant, the timing of when you and your partner have intercourse is critical. Our online ovulation calculator can help you understand your fertile window.

Your fertile window refers to the most fertile days in your menstrual cycle which give you the highest chance of conceiving. The most fertile days in your cycle are the days leading up to ovulation, before the egg is released from the ovary. For this reason, we recommend that couples have sexual intercourse every two days throughout the fertile window.

If you have irregular menstrual cycles, or your cycle length varies from month to month, it may be difficult to calculate your ovulation date in which case follicle tracking may be useful.

If you have been trying to conceive for more than 12 months (or 6 months if you are over the age of 35) without success we recommend you book an appointment with a fertility specialist.