Tracking your menstrual cycle helps you predict upcoming periods, plan ahead, and notice any unusual changes in your cycle pattern.
This calculator adds your average cycle length to the start date of your last period to predict your next period, and projects the following two cycles as well.
Example: LMP on 1 January, 28-day cycle:
Next period = 1 January + 28 days = 29 January
A typical menstrual cycle ranges from 21 to 35 days, with 28 days being the commonly cited average.
Stress, illness, travel, weight changes, and hormonal fluctuations can all shift your cycle from month to month.
No, it's a prediction tool only - consult a doctor if you notice persistent irregularity or unusual symptoms.