Do you wonder when your baby is expected to finally arrive? Use this calculator to determine estimated due date, conception date and fetal age. Please enter the three parameters below: last menstrual period, average cycle length, average luteal phase length. If you do not know average cycle length and/or average luteal phase lenght, don't worry as the values for these paramters will be set to societal averages when leaving the entry fields empty.
Last Menstrual Period (1st day): (MM/DD/YYYY) Average Cycle Length: (22 to 45, defaults to 28) Average Luteal Phase Length: (9 to 16, defaults to 14)
Every pregnancy is a unique event that can be quite unpredictable. This calculator provides an indication only. The author of this website is not liable for any decisions made on the basis of the information provided.
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