Fertility Window Calculator
Your fertile window is the handful of days around ovulation when conception is possible — sperm can survive several days, so the window opens before ovulation itself.
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How this works
The fertile window is estimated as the 5 days before ovulation through the day of ovulation itself — the days with the highest chance of conception.
Medical disclaimer
This tool provides general health information based on published formulas and guidelines. It is not a medical diagnosis and does not replace advice from a qualified doctor. If you have a health concern, please consult a physician or book a consultation on IMCURE.
Frequently asked questions
Can I get pregnant outside this window?
It is less likely but not impossible, especially with cycle irregularity, which can shift the actual ovulation date.
