# Ovulation Calculator

The ovulation calculator provides an estimate of the time of ovulation and an estimate of the days when fertility is at its highest.

### Ovulation Calculator

## Information About the Ovulation Calculator

The ovulation calculator provides an estimate of the time of ovulation and an estimate of the most fertile days.

Enter the first day of your last period and the average length of your cycle, if it is something other than 28 days, in the fields of the calculator.