How the Period Calculator Works

The period calculator helps estimate your next menstrual cycle based on the first day of your last period and your average cycle length. While most cycles are about 28 days, it is normal for cycles to range between 21 to 35 days.

Why Use a Period Calculator?

Tracking your period can help you plan ahead, identify irregularities, and understand your fertility window. It can also support reproductive health discussions with your doctor.

FAQs

Q: Is this calculator 100% accurate?
A: No, it provides an estimate. Stress, diet, hormonal changes, and medical conditions can affect cycles.

Q: Can this calculator help me avoid pregnancy?
A: No. It should not be used as a method of contraception.

Q: When should I consult a doctor?
A: If your cycles are irregular, too short, too long, or you experience severe pain or heavy bleeding, consult a gynecologist.