Ovulation Calculator
Our Ovulation Calculator helps you predict your most fertile days and ovulation date based on your menstrual cycle length. Whether you’re trying to conceive or tracking for better reproductive health, this fertility calculator provides a clear view of your fertile window. With accurate ovulation predictions, you can improve your chances of pregnancy and plan ahead with confidence. It’s also a helpful ovulation tracker for cycle regularity and PMS management.
Ovulation Calculator
Track your fertile window & ovulation day
Enter the date your last period started
21 days
28 days (avg)
35 days
45 days
Next Ovulation
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Fertile Window
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Next Period
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Period
Follicular
Fertile
Ovulation
Luteal
Current Cycle Calendar
Upcoming 6 Cycles
6–7 days
Fertile window
12–24 hrs
Egg viability
Up to 5 days
Sperm survival
Dates are estimates based on average cycle patterns. Individual cycles vary. Consult a healthcare provider for medical advice.