Ovulation Predictor Calculator

Please select the first day of your last menstrual period:

{{ date }}

Usual number of days in your cycle:

Here are the results based on the information you provided:

Your next most fertile period is {{ fertileFrom }} to {{ fertileUntil }}.

If you conceive within this timeframe, your estimated due date will be {{ dueDate }}.

*Average length will vary by woman. **A woman's best days to conceive can start at least one day prior and last at least one day after fertile date.