How long is a menstrual cycle

Most women believe the average menstrual cycle is 28 days long, but cycles can range from 23 to 35 days. Read on to learn more about periods and fertility.
Do you know how long a menstrual cycle is? You may answer with the textbook 28 days, but a study of more than 30,000 women found that 87% had cycles that fell in the range of 23 to 35 days1.

How a Short Menstrual Cycle Impacts Fertility

Menstrual cycle: What's normal, what's not - Mayo Clinic

The Menstrual Cycle: Phases of Your Cycle

Getting your period: What is a 'normal' menstrual cycle for teens and preteens? - UChicago Medicine

This Occurs Between Days 16 To 28 Of The Menstrual Cycle 2024

Real-world menstrual cycle characteristics of more than 600,000 menstrual cycles

Menstrual Cycle - an overview

Menstrual Cycle: Overview, What's Normal, Phases Explained

Menstrual cycles today: how menstrual cycles vary by age, weight, race, and ethnicity – Apple Women's Health Study

Phases of the Menstrual Cycle - Dr. Jolene Brighten

The Menstrual Cycle - Phases, hormones and their functions

Menstrual Cycle: An Overview

Dogs in Heat: When It Happens, How Long It Lasts, and What To Do

Menstrual cycle - Wikipedia