Ovulation / Fertility
Find your fertile window and predicted ovulation day based on your average cycle length.
Ovulation / Fertility
Ovulation day and fertile window based on your cycle
Formula & Method
Ovulation ≈ LMP + (cycle length – 14); fertile window spans 5 days before to 1 day after ovulation
About This Calculator
Find your fertile window and predicted ovulation day based on your average cycle length.
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⚕️ Medical Disclaimer
This calculator is for informational and educational purposes only. Results are estimates and may not reflect your individual health status. Always consult a qualified healthcare professional before making medical, dietary, or fitness decisions. In emergencies, call 112.