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Enter the mother's pregnancy information into this calculator and it will provide an estimated conception date, birth due date, and an estimated current fetal age. Great for all those mothers-to-be!

Be sure to keep in mind that any due date is only an estimate -- and only about 5% of babies actually arrive on the date they're "due"

Last Menstrual Period:        
                              (MM/DD/YYYY format)

Average Length of Cycles:      (22 to 45)
                              (defaults to 28)

Average Luteal Phase Length:   (9 to 16)
                              (defaults to 14)

Estimated Conception: Estimated Due Date: Estimated Fetal Age:

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