Ovulation Calculator
and / or
Estimated Due Date "EDD" Calculator

You may enter either the first day of your last period, the date of ovulation or the estimated due date and the calculator will do the rest. After you have entered one of the dates you can either press the tab key or click on the Calculate button. You cannot change the trimester dates; they are calculated for you.

First Day of Last Period

  

Estimated Ovulation Date

  

Beginning of Second Trimester

  

Beginning of Third Trimester

  

Estimated Due Date

  

*Date format: m/d/yyyy
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