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Fertility Planning

Predict your fertile window with confidence

Input calendar

Last period start date (AD)

28 days
5 days

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Your next fertile window

Calculate to see your personalised timeline

Next ovulation
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Fertile window
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Next period starts
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Six-cycle outlook

Fertility tips & reminders

  • Track your periods for at least three cycles so calculations match your body more closely.
  • Aim for healthy sleep, hydration, and stress management to keep ovulation regular.
  • Consider speaking with a healthcare provider if your cycle is often shorter than 21 days or longer than 40 days.