Due Date Calculator

Any due date is only an estimate -- and only about 5% of babies actually arrive on the date they're "due." Your actual delivery date could change up to two weeks before or after this date, unless you deliver prematurely. Health professionals usually estimate due date based upon a 28 day cycle.

Enter the date of the first day of your last menstrual period (LMP), cycle length and your luteal phase length* (leave it 14, if not known), and we will do the calculation for you!

Fill in your information here

Last menstrual period (LMP):	(MM/DD/YYYY)
Cycle length (avg):	(22 to 45)
Luteal phase length (avg):	(9 to 16)

Estimated date of conception:
Estimated due date:
Baby's estimated age now:

*The Luteal Phase is a term that is used in describing the time period that's calculated from the day after ovulation and runs through the remainder of a monthly cycle. This phase usually lasts between 12 and 16 days and is fairly consistent within woman's cycle.
It is also frequently referred to as "days past ovulation" or "DPO". During the luteal phase a women produces progesterone increasing her temperature. The higher temperature acts like an incubator which is important in maturing a fertilized egg if conception has occurred.

Learn about the changes taking place in mother's body and the growing baby.
	Week 5-8	Week 9-12
	Week 13-16	Week 17-20
	Week 21-24	Week 25-28
	Week 29-32	Week 33-36

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