When will I reach menopause?

Not precisely — and it's worth being honest that no tool or test can. What we do know are the population averages: natural menopause arrives around age 51 in the US, and most people reach it somewhere between about 45 and 55 (some sources give a slightly wider 45–58). A handful of factors reliably shift the odds earlier — smoking, a family history of early menopause, certain cancer treatments, surgery that removes both ovaries, and some autoimmune conditions. This tool combines your age with those factors to describe a rough window. It cannot give you a year, because the exact date depends on your own egg supply and how fast it falls, which no one can see in advance. Menopause is only known for certain looking backward, once you've gone 12 full months with no period.

The best-established factors are: smoking, which is linked to reaching menopause about one to two years earlier on average; a family history of early menopause, especially your mother's timing, which is one of the strongest single clues; chemotherapy or radiation to the pelvis or abdomen, which can bring it on earlier or suddenly; surgery that removes both ovaries, which causes menopause immediately, whatever your age; and some autoimmune conditions, which are linked to earlier menopause or primary ovarian insufficiency. Beyond those, most everyday lifestyle factors have weak or uncertain effects on timing. Having been pregnant may modestly delay it. None of these lets anyone name a year — they shift a window, not a date.

Menopause before age 40 is called premature menopause, and when the ovaries wind down early on their own it's known as primary ovarian insufficiency (POI). About three in 100 women reach menopause before 40. This is genuinely different from ordinary early menopause and shouldn't be brushed off as “just starting early”: it deserves a prompt clinician evaluation, both to look for a cause (genetic, autoimmune, or treatment-related, though often none is found) and because early loss of estrogen has real implications for bone, heart, and — if relevant — fertility. Treatment, often hormone therapy until around the average age of menopause, is commonly recommended to offset those risks. If your periods have stopped or turned irregular and you're under 40, see a clinician rather than assuming it's simply early.

Not the date, no. Two hormones get measured: AMH reflects how many eggs remain (ovarian reserve), and FSH rises as the ovaries wind down. Both can suggest roughly where you are in the process, and a very low AMH or high FSH points toward the transition being nearer. But neither reliably forecasts the year menopause will arrive — the levels swing from month to month in perimenopause, and studies show wide overlap between people who are years apart. Major guidelines don't use these tests to predict a date, and in most cases the diagnosis is made clinically, from your cycle pattern and the 12-months-without-a-period rule, not from a lab number. Treat any test result as a hint about direction, not a countdown.

A few situations are worth a clinician's attention rather than waiting them out. Most important: periods stopping or becoming irregular before age 40, which can signal primary ovarian insufficiency and shouldn't be assumed to be normal. Also see someone for very heavy or clearly abnormal bleeding, for any bleeding or spotting after you've gone 12 months with no period, and any time menopausal symptoms are disrupting your life — those are treatable, and you don't have to tough them out. If you've had both ovaries removed or cancer treatment that brought on early menopause, a conversation about managing it (including bone and heart protection) is well worth having. To read where you are in the transition right now from your cycle pattern, our perimenopause quiz walks through the red flags in detail.

Yes. This tool runs entirely in your browser: your age and the factors you check are used on your own device and are never sent to a server, stored, or shared — close the tab and they're gone. We treat reproductive and menopause information as sensitive by default, so nothing here creates a record anywhere. It's general educational information based on guidance from The Menopause Society, ACOG, and the Office on Women's Health; it isn't medical advice, a diagnosis, or a test, and it can't tell you the year you'll reach menopause — only time, and a clinician, can do that.