📅 Ovulation Calculator

Estimate your fertile window.

First Day of Last Period

Cycle Length

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Ovulation

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Fertile Window

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Next Period

Estimates only. Consult your doctor.

Fertile Window = 5 Days Before Ovulation + Ovulation Day

Signs of ovulation?

Clear stretchy cervical mucus, slight basal temp rise, and mild pelvic discomfort are common signs.