Menstrual Cycle and Ovulation Tracker
Predict menstrual cycle phases and ovulation dates for fertility planning.
Menstrual Cycle and Ovulation Tracker
Predict menstrual cycle phases and ovulation dates for fertility planning.
Cycle predictions are estimates. For fertility planning or medical concerns, please consult a healthcare provider.
How This is Calculated
Cycle phase predictions are based on the standard menstrual cycle model: Menstruation (days 1–5), Follicular phase (days 1–13), Ovulation (~day 14 for a 28-day cycle), Luteal phase (days 15–28). The luteal phase is consistently ~14 days; the follicular phase varies with cycle length.
Disclaimer: This tool provides estimates for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
How to Use This Calculator
This tracker predicts your next period, ovulation date, and fertile window based on your cycle data.
- Step 1: Enter the first day of your last period.
- Step 2: Enter your average cycle length (default: 28 days).
- Step 3: Click "Track My Cycle" to see predictions.
Frequently Asked Questions
Predictions are estimates based on average cycle patterns. Actual dates can vary due to stress, illness, or hormonal changes. For fertility treatment, consult a specialist.
The fertile window spans approximately 5 days before ovulation and 1 day after — when conception is most likely to occur.
No. Natural fertility awareness methods have significant failure rates. Consult a healthcare provider for contraceptive options.
