What is the average duration of a normal menstrual cycle?

The average duration of a normal menstrual cycle is typically around 28 days. This timeframe is considered standard for many individuals, although cycles can vary between 21 to 35 days and still be considered normal. A 28-day cycle is often used as a reference point because it aligns closely with the average ovulation timing, occurring approximately 14 days after the first day of the last menstrual period.

It’s important to recognize that while 28 days is common, some variations exist from person to person. Factors such as age, health, and hormonal balance can influence the length of the cycle. Understanding this average helps in recognizing normal versus potential abnormal menstrual patterns, which can be crucial for reproductive health assessment.