Ovulation calculator
🌸 Ovulation Calculator
Track your fertile window and
predict ovulation days with confidence
days
days
🌙 Ovulation & Fertility Tracker
📌 Ovulation Day
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💕 Fertile Window (Best Chance)
Window Start
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Window End
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Enter your last period date and cycle length to calculate your fertile days.
✨ Ovulation Occurs
~14 days before next period
💑 Fertile Window
Ovulation day ± 5 days
🕐 Egg Lifespan
12–24 hours
🧬 Sperm Lifespan
Up to 5 days
⚕️ This calculator provides estimates based on average cycle patterns. Individual cycles may vary. For medical advice or fertility concerns, consult a healthcare provider.