What is ovulation?
Ovulation is the process when a mature egg is released from the ovary into the fallopian tube. This is the most fertile period of the menstrual cycle, when the chance of conception is highest. Ovulation typically occurs about 14 days before the start of the next period.
How to calculate ovulation date?
The ovulation date is calculated using the formula: Ovulation date = Last menstrual period + (cycle length – 14) days. For example, if your last period started on January 1 and your cycle is 28 days, ovulation is expected on January 15.
What is the fertile window?
The fertile window is the period during which conception is most likely. It spans 6 days: 5 days before ovulation and 1 day after ovulation. Sperm can survive in the female body for up to 5 days, while an egg remains viable for about 12–24 hours after ovulation.
What is a normal cycle length?
A normal menstrual cycle lasts between 21 and 35 days. The average length is 28 days. Cycle length is measured from the first day of one period to the first day of the next. If your cycle is irregular, the actual ovulation date may differ from the calculated estimate.
What are the signs of ovulation?
Common signs of ovulation include: changes in cervical mucus (it becomes clear and stretchy), a slight rise in basal body temperature, mild lower abdominal pain (mittelschmerz), increased libido and breast tenderness.
Important to know
This calculator provides an estimated ovulation date based on a regular menstrual cycle. The actual ovulation date may vary due to stress, illness, weight changes or other factors. This calculator should not be used as the sole method of contraception or fertility planning. Always consult your doctor.