Ovulation & fertility

Understand when you ovulate, read the signs of your fertile window, and plan around your most fertile days.

Free tools and clearly-sourced guides on ovulation timing, symptoms and trying to conceive.

Ovulation calculator

🔒 Calculated locally — your dates never leave your device

The day your last period started
Usually 21–35 days; 28 is typical
Fill in the form above and press “Calculate”

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