Ovulation Calculator

Calculate your ovulation day and fertile window based on your last period date and cycle length.

🌸 Ovulation Calculator

First Day of Last Period

Cycle Length (days)

Luteal Phase Length (days)

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Ovulation Day

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Fertile Window

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Next Period

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Earliest Pregnancy Test

💡 Tip: Your most fertile days are 2-3 days before ovulation and ovulation day itself. Sperm can survive up to 5 days inside the body.

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