Find your fertile window and ovulation date. Plan your pregnancy by knowing exactly when you're most likely to conceive.
Ovulation typically occurs about 14 days before your next period starts. Our calculator estimates your ovulation date based on your cycle length. You can also look for signs like increased basal body temperature, changes in cervical mucus, and mild cramping.
Your fertile window is the 5-6 days each month when you're most likely to conceive. It includes the 5 days before ovulation and the day of ovulation itself. Sperm can survive up to 5 days in the reproductive tract.
While some theories suggest that timing conception relative to ovulation might influence gender (Shettles method), there is no strong scientific evidence supporting this. For a gender prediction, our experts can analyze your ultrasound once you're pregnant.
Our ovulation calculator estimates your most fertile days based on your menstrual cycle length and the date of your last period. Ovulation typically occurs about 14 days before your next period starts. The calculator identifies your 6-day fertile window — the 5 days before ovulation plus ovulation day itself.
This is important because sperm can survive up to 5 days inside the reproductive tract, while the egg lives for only 12-24 hours after ovulation. Timing intercourse within this window maximizes your chances of conception.
5 Days
Before ovulation — sperm can survive and wait for the egg
1 Day
Ovulation day — the egg is released and viable for 12-24 hours
2 Days
Peak fertility — the 2 days before ovulation are your best chance
Congratulations on trying to conceive! Once you get a positive test, use our due date calculator to estimate when your baby will arrive. And when you're ready to find out if it's a boy or girl, our experts can analyze your ultrasound using Ramzi, Nub, and Skull theories — starting at just $9.99.
The Ovulation Calculator is provided for informational and entertainment purposes only. Results are not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or qualified healthcare provider with any questions regarding a medical condition.
Do not make health or medical decisions based on these results. Read our full medical disclaimer.
Once you see that positive test, upload your ultrasound for a professional gender prediction using proven theory methods.
