Period Calculator

Predict your next period and ovulation dates.

Your Next Period

Estimated Next Period N/A
Estimated Ovulation N/A

How the Period Calculator Works

Our Period Calculator helps you predict your next menstrual period and ovulation dates.

How This Calculator Works

  1. Input Your Details: Enter the first day of your last menstrual period and your average cycle length.
  2. Next Period Calculation: The calculator adds your average cycle length to the date of your last period to predict your next one.
  3. Ovulation Estimation: Ovulation is estimated to occur about 14 days before your next period.