Menstrual Period Calculator
Plan your cycle with our Menstrual Period Calculator. Input your last period date and cycle length to accurately predict your next period and fertile days. Ideal for tracking regular and irregular cycles, this calculator helps you stay informed about your menstrual health.
Your Period Calendar
Cycle Statistics
Average Cycle Length: 28 days
Regularity: Regular
Next Ovulation:
Flow Intensity:
Cycle Timeline
Period Start
Ovulation
Next Period
Symptoms History
Cycle Length History
Understanding Your Cycle Phases
Menstrual Phase
The shedding of the uterine lining, typically lasting 3-7 days. This is when you experience your period.
Follicular Phase
The phase where follicles in the ovaries mature, preparing for ovulation. This phase can vary in length.
Ovulatory Phase
The release of a mature egg from the ovary. This typically occurs around day 14 of a 28-day cycle.
Luteal Phase
The phase after ovulation where the body prepares for either pregnancy or menstruation.
Important Notes
- This calculator provides estimates and should not be used as a form of birth control.
- Track your cycle for several months to get more accurate predictions.
- Consult a healthcare provider if you experience significant changes in your cycle.
- Remember that stress, illness, and lifestyle changes can affect your cycle.
Frequently Asked Questions
The prediction is based on the cycle length you enter. For better results, track your cycle for several months to establish your average length.
The fertile window is the time when conception is most likely, typically 5 days before ovulation and the day of ovulation.
Simply check the boxes for any symptoms you experience during your cycle. The tool will record them and display them in the symptoms history chart.
The menstrual cycle has four phases: menstrual (period), follicular (pre-ovulation), ovulatory (ovulation), and luteal (post-ovulation).
The tool calculates your fertile window and ovulation date, which can be useful for both conception and natural family planning.
Several factors can affect cycle regularity, including stress, diet, exercise, sleep patterns, and underlying health conditions. It's normal for cycles to vary slightly from month to month.
