๐ Menstrual Cycle Calculator
Calculate next period date and ovulation date from your menstrual cycle.
What is Menstrual Cycle?
The menstrual cycle is the period from the start of one period to the day before the next. Average is 28 days; 21-35 days is normal.
Ovulation Calculation
Ovulation Date = Next Period Date - 14 days
The fertile window is 5 days before and 1 day after ovulation.
Safe Days / Fertile Window
Fertile Window Start: Fertile window: 5 days before to 1 day after ovulation
Fertile Window End: Safe days: Periods outside the fertile window (not 100% safe)