Ovulation Calculator
Predict your ovulation date and fertile window based on your menstrual cycle.
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Typical range: 21-35 days
Fertile Window
Tue, May 19 — Mon, May 25
Ovulation Date
Sun, May 24
Next Period
Sun, Jun 7
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Frequently Asked Questions
How accurate is this calculator?
This provides an estimate based on average cycle patterns. Individual cycles vary, and ovulation can shift due to stress, illness, or lifestyle changes. For precise tracking, consider using ovulation test kits.
What is the fertile window?
The fertile window is the 6-day period ending on the day of ovulation. Sperm can survive up to 5 days in the female reproductive tract, so intercourse in the days before ovulation can result in pregnancy.
Can I use this if my cycles are irregular?
For irregular cycles, use the shortest cycle length from the last 6 months for a conservative estimate, or consult a healthcare provider for personalized guidance.