Perimenopause Stage Finder
Find out where you are on the menopause journey based on your cycle changes, symptoms, and medical history.
Let's start with the basics
Have you ever been pregnant?
How it works
Answer 5 short sections about your age, periods, symptoms, and medical history. You'll see where you likely fall on the perimenopause-to-menopause timeline.
Based on STRAW+10 staging criteria. Your answers stay in your browser.
Takes about 3 minutes · 5 sections · Clinician-reviewed
Understanding Perimenopause Stages
The journey from reproductive years to postmenopause is not a single event — it is a transition that unfolds over years. The STRAW+10 staging system, developed by an international consortium of researchers, provides a framework for understanding where you are in this process.
Most women spend 4 to 10 years in the perimenopause transition. The experience varies enormously — some women barely notice the change, while others find it significantly impacts their daily life. Understanding your likely stage can help you make sense of what you are experiencing and know what to expect next.
How STRAW+10 staging works
The STRAW+10 system uses menstrual cycle patterns as the primary marker for staging. In early perimenopause, cycle length starts to vary by 7 or more days. In late perimenopause, periods become increasingly infrequent with gaps of 60 or more days. Menopause is confirmed after 12 consecutive months without a period.
When menstrual data is unavailable — due to hormonal contraception, IUDs, or hysterectomy — clinicians use symptom patterns and age as proxy indicators. This tool follows the same approach.
Edge cases this tool handles
Not everyone fits neatly into the standard staging model. This tool accounts for surgical menopause (bilateral oophorectomy), possible premature ovarian insufficiency (under 40 with period loss), hormonal contraception masking cycle changes, PCOS causing baseline irregularity, and postpartum or breastfeeding states.
When staging is most useful
Knowing your approximate stage helps you understand whether your symptoms are expected, when to seek medical attention, and what to track. It can also help your clinician tailor advice and treatment recommendations to where you are in the transition.
Frequently Asked Questions
What is early perimenopause?+
Early perimenopause is the initial phase of the menopausal transition. Your cycles may become shorter, longer, or less predictable — often varying by 7 or more days from your usual pattern. Symptoms like sleep disruption, mood changes, and occasional hot flashes may begin. This stage typically starts in the mid-40s but can begin in the early 40s.
What is late perimenopause?+
Late perimenopause is characterised by more pronounced cycle disruption — skipping periods, going 60 or more days between cycles, and generally more intense symptoms. Hot flashes and night sweats often peak during this phase. This stage usually lasts 1 to 3 years before the final menstrual period.
How is menopause officially defined?+
Menopause is defined retrospectively as the point 12 months after your last menstrual period. It is a single milestone, not a phase. After this point, you enter postmenopause. The average age of menopause is 51, but the normal range is 45 to 55.
Can I tell if I'm in perimenopause while on birth control?+
Hormonal contraception (pills, IUDs, implants) can mask the cycle changes that are the hallmark of perimenopause. If you are on hormonal birth control, staging relies on your symptoms and age rather than menstrual patterns. Discuss FSH testing with your provider if you want a clearer picture.
What if I had a hysterectomy?+
If you had a hysterectomy but retained one or both ovaries, your ovaries may still be producing hormones. Without menstrual bleeding data, staging relies on symptoms, age, and potentially blood tests. If both ovaries were removed, you have entered surgical menopause regardless of age.