Ovulation & Fertility Calculator
Understand your cycle and identify your most fertile days. Enter your last period and cycle details to calculate your fertile window and peak ovulation dates.
Medical Disclaimer: This tool provides estimates based on average menstrual cycle lengths and is for educational and planning purposes only. It should not be used as a method of contraception, nor does it guarantee pregnancy. Your actual fertile window may vary. Always consult a healthcare provider for personalized medical advice.
Cycle Inputs
Fertility Forecast
Fertile Window
—
Best time to attempt conception.
Estimated Ovulation
—
Approximate day egg is released.
Next Expected Period
—
First day of your next cycle.
Due Date If Conceived
—
Estimated birth date of your baby.
Fertility Calendar
Visual representation of your estimated fertility window across two menstrual cycles.
Fertile Window
Peak Fertility
Ovulation Day
Expected Period
Pregnancy Test Day
Forecast Ready
Fill in your last period date and cycle parameters to render your personalized fertility schedule.