Ovulation Prediction Calculator

Please select the first day of your last menstrual period:

{{ date }}

The normal number of days in your cycle:

Here are the results based on the information you provided:

Your next most productive period {{ fertileFrom }} with {{ fertileUntil }}.

If you become pregnant during this time, your estimated due date {{ dueDate }}.
*The average length will vary by woman. **A woman's best days to conceive may begin at least one day before her due date and last until at least one day after.