Health
Menstrual Cycle Calculator Calculator
Calculates menstrual cycle, ovulation date, and fertile window based on last period date.
Info
Track your menstrual cycle with our detailed period calculator. Get a 12-month calendar and plan ahead by learning your ovulation and fertile window dates.
About the Calculation Method
- Based on the first day of your last period.
- Cycle length is the time from the first day of one period to the first day of the next.
- Ovulation typically occurs 14 days before the next period.
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