Ovulation Calculator

Calculate your fertile window and most probable ovulation date to increase your chances of conception

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Calculate Your Fertile Window
💡 Note: This tool provides estimates. Ovulation cycles can vary. This should not be used as a form of birth control.
Your Last Period: -
Your Cycle Length: -
Fertile Window
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Approximate Ovulation
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Next Period
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Pregnancy Test Day
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Estimated Due Date
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Your Fertility Calendar
Period
Fertile Window
Best Days
Ovulation
Signs of Ovulation
  • Rise in basal body temperature (½ to 1 degree F)
  • Higher levels of luteinizing hormone (LH) on ovulation test
  • Cervical mucus appears clearer, thinner, stretchy (like egg whites)
  • Breast tenderness
  • Mild bloating
  • Light spotting
  • Slight cramping or pain on one side (mittelschmerz)
Tips to Increase Chances of Conception
  • Have sex 1-2 days before ovulation: These are the most fertile days
  • Have sex regularly: Every 2-3 days throughout your cycle
  • Track ovulation signs: Use BBT, cervical mucus, or ovulation kits
  • Maintain healthy weight: BMI between 18.5-24.9 is ideal
  • Reduce stress: Try yoga, meditation, or light exercise
  • Avoid smoking & excess alcohol: Both can affect fertility
  • Partner's health matters: Men should maintain healthy lifestyle too