Ovulation Calculator
Estimate your ovulation date and fertile window based on cycle length and last menstrual period. Plan or prevent pregnancy with cycle tracking.
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
Inputs
Results
Estimated Ovulation
January 15
How to Use This Calculator
- Enter Cycle Length, Last Period Day, and Last Period Month.
- Review the Estimated Ovulation result.
- Use Fertile Window Start and Fertile Window End to inform your decision.
- Use the chart to visualize the results and explore different scenarios by adjusting inputs.
Related Calculators
Pregnancy Due Date Calculator
Calculate your estimated due date, current gestational week, trimester, and key pregnancy milestones.
Due Date Calculator
Calculate your estimated due date based on your last menstrual period or conception date. Track your current week and trimester.
BMI Calculator
Calculate your Body Mass Index (BMI) to assess your weight category. Supports both imperial and metric units.