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Find Your Most Likely Ovulation Dates



First Day of Last Period
(mm/dd/yyyy)

Days in Your Cycle
Your Most Likely Date of Ovulation is
The following is a "best guess" overview of your approximate fertile cycle:
You told us this was the 1st day of your last period
This is the very beginning of your fertile period. Although your egg has not yet been released, it is possible that sperm could survive until your egg is released.
It is now 2 days before ovulation; it is likely that you could conceive on this date.
It is 1 day before ovulation. You are very fertile on this date.
Ovulation. Based on the 1st day of your last period, this is the date that your egg is released. You are most fertile on this date.
On the day after ovulation, conception is still very possible.
2 days after ovulation, your fertility is decreasing. The egg survives for about 24 hours, and, if not fertilized, it will disintegrate.
If your egg was successfully fertilized, this is the approximate date when it implants itself in the uterus.
A blood pregnancy test may be accurate now from this date forward.
Some early pregnancy home tests may be accurate now � but be aware of the possibility of a false negative result.
If you are NOT pregnant, this is the date you will probably get your next period. If you ARE pregnant, you can expect accurate results from a pregnancy test.
This is your most likely due date if you became pregnant in this cycle.

Explore Your Pregnancy with our Week-by-Week Guide to the details of your pregnancy

How do we determine these dates?


This ovulation date calculator uses commonly recognized "best-guess" methods to help estimate the days you are most likely to ovulate, and hence, have the best chance to conceive. However, there are several more scientific methods to help you pinpoint your actual dates of ovulation. We therefore suggest that you consult with your doctor if you need to be more precise.

Tools & Resources

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Due Date Calculator

Ovulation Calculator

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