Track your menstrual cycle, predict your next period and calculate fertile window. Based on your cycle length.
This period and cycle calculator estimates your next periods and fertile window based on the first day of your last period, your average cycle length and your period length. It's a simple way to track your cycle, plan ahead and understand your body's rhythm.
This tool provides general information only and is not medical advice or a contraceptive method. Cycles naturally vary, so predictions are estimates. If your cycle is very irregular or you have concerns, speak with your GP or a women's health professional.