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Ovulation Calculator

Find your most fertile days, ovulation window, and pregnancy odds based on your menstrual cycle.

Cycle Details

First Day of Last Period

Cycle Length: 28 days

2145 days

Luteal Phase: 14 days

1016 days

Period

Fertile Window

Ovulation Day

Regular Day

Enter your cycle details and click Calculate to see your fertile window, ovulation date, and cycle calendar.

Medical Disclaimer: This tool provides estimates based on a standard 28-day cycle. Individual cycles vary. Consult a healthcare provider for fertility advice.

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